Knowledge In Indian Philosophy

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KNOWLEDGE IN INDIAN PHILOSOPHY posteriori identities between phenomenal and physical (or functional) properties. In a paper co-written with David Chalmers, Jackson also objects to a posteriori physicalism. According to Chalmers and Jackson (2001), the approach used by a posteriori physicalists presumes that there is a deep schism between concepts and ontology, a schism that would undercut the justification for uncontroversial identity statements. Despite his continuing opposition to a posteriori physicalism, Jackson now rejects the knowledge argument (Jackson 2003). He contends that phenomenal knowledge is deducible, in principle, from physical knowledge, even if we may be unable to perform the deduction. Jackson's turnabout is based on his acceptance of representationalism, which claims that the phenomenal character of a state is exhausted by its representational content. For instance, suppose that one of Mary's subjects, Joe, gazes at a ripe tomato. Representationalists maintain that the visual phenomenal quality of Joe's experience is fully captured by the fact that his state represents there is something round and red before me. (Specific representational contents will be much more detailed, of course.) Because Mary can, in principle, know the representational contents of Joe's states before her release, she can in principle know all that there is to know about what it is like to see red. Churchland, Paul. "Reduction, Qualia, and the Direct Introspection of Brain States." Journal of Philosophy 82 (1985): 8-28. Conce, Earl. "Phenomenal Knowledge." Australasian Journal of Philosophy 72 (1994): 136-150. Dennett, Daniel. Consciousness Explained. Boston: Little, Brown, 1991. Gertler, Brie. "A Defense of the knowledge Argument." Philosophical Studies 93 (1999): 317-336. Horgan, Terence. "Jackson on Physical Information and Qualia." Philosophical Quarterly 34 (1984): 147-52. Jackson, Frank. "Epiphenomenal Qualia." Philosophical Quarterly 32 (1982): 127-136. Jackson, Frank. "Mind and Illusion." In Minds and Persons, edited by Anthony O'Hear. Cambridge, U.K.: Cambridge University Press, 2003. Jackson, Frank. "What Mary Didn't Know." Journal of Philosophy 83 (1986): 291-295. Kripke, Saul. Naming and Necessity. Cambridge, MA: Harvard University Press, 1980. Levine, Joseph. "Materialism and Qualia: The Explanatory Gap." Pacific Philosophical Quarterly 64 (1983): 354-361. Lewis, David. "What Experience Teaches." Proceedings of the Russellian Society 13 (1988): 29-57. Reprinted in Ludlow et al., There's Something About Mary. Loar, Brian. "Phenomenal States." In Philosophical Perspectives, vol. 4: Action Theory and Philosophy of Mind, edited by . James Tomberlin. Atascadero, CA: Ridgeview Press, 1990. Ludlow, Peter, Yujin Nagasawa, and Daniel Stoljar, eds. There's Something About Mary: Essays on Phenomenal Consciousness and Frank Jackson's Knowledge Argument. Cambridge, MA: MIT Press, 2004. Nagel, Thomas. "What Is It Like to Be a Bat?" Philosophical Review 83 (1974): 435-50. Reprinted in his Mortal Questions (Cambridge, U.K.: Cambridge University Press, 1979). Nemirow, Laurence. "Review of Thomas Nagel's Mortal Questions" Philosophical Review 89 (1980): 473-477. Robinson, Howard. Matter and Sense: A Critique of Contemporary Materialism. Cambridge, U.K.: Cambridge University Press, 1982. Tye, M. "The Subjective Qualities of Experience." Mind 95 (1986): 1-17. Brie Gertler (2005) OVERALL ASSESSMENT The knowledge argument is an argument against physicalism. Yet its importance stems as much from the richness and variety of the responses inspired by its provocative reasoning as from its conclusion. Discussion of the argument has profoundly affected debate on a range of issues, including: differences between propositional knowledge and ability, the relation between identity and deducibility, and the special features of phenomenal knowledge. While the majority of philosophers ultimately reject the argument, a vocal minority accepts it as sound. See also functionalism; Mind-Body Problem; Physical ism; Qualia. KNOWLEDGE IN INDIAN PHILOSOPHY Bibliography Alter, Torin. "A Limited Defense of the knowledge Argument." Philosophical Studies 90 (1998): 35-56. Broad, C.D. Mind and its Place in Nature. London: Routledge and Kegan Paul, 1925. Chalmers, David, and Frank Jackson. "Conceptual Analysis and Reductive Explanation." Philosophical Review 110 (2001): 315-360. Almost all the philosophical texts in classical India were written in Sanskrit. How does one say knowledge in Sanskrit? And what do the Sanskrit terms that may be translated by the English word knowledge mean exactly? There are no simple answers to these questions. In Western philosophy truth and falsity are usually ascribed to statements, propositions, or beliefs. In the Indian tradition truth and falsity are ascribed to a cogni ENCYCLOPEDIA OF PHILOSOPHY 2nd edition * 115

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KNOWLEDGE IN INDIAN PHILOSOPHY tion or an awareness (the most common term is jnana, but there are a relatively large number of synonyms, or quasi synonyms, such as vijnana, buddhi, dhi and citta). The word jnana is derived from the root jna, which is etymologically related to the English word know. Nevertheless, the rendering of jnana as knowledge is generally avoided because jnana can be true or false, whereas false knowledge or wrong knowledge seems like a contradiction in terms (at least in English). Furthermore, jnana is a particular and momentary event, whereas knowledge often refers to a gen- eral and lasting acquaintance with facts. Furthermore, knowledge is, or may be, an abstract entity that is shared by many persons; jnana is always individual and belongs to a single person. Finally, knowledge, unlike jnana, is a collective term and can only be used in the singular. A person has many jnanas, but not many knowledges. The different ontologies of the various traditions of Indian philosophy necessitate different notions of jnana. According to some Brahminical schools, jnana is a momentary property of the eternal individual soul (atman). The relationship between jnana and soul is the relationship between quality and substance. It is the same relation that occurs between a color and the material substance like a pot in which it inheres. In contrast, the Bud- dhists reject the idea of substance in general and of a permanent soul or self in particular. According to them an awareness (jnana) is a primitive (nonderivative) ele- ment of existence (dharma) that depends only on its causes and conditions (e.g., sense, object, and previous mental factors), not on any substrate such as a permanent soul. The Samkhya and Yoga are unique in the Brahminical tradition in claiming that the cognitive and psychological processes occur in the realm of matter and have no direct contact with the conscious soul, which is distinct from them and completely passive (for more details, see Chakravarti 1975, pp. 171-196). Finally, according to the materialists (Carvaka or Lokayata), an awareness, or consciousness, arises from the combination of the material elements earth, water, fire, and wind when they evolve into body, sense, and object, just as the power of intoxication arises when certain substances ferment (Namai 1976, Franco 1997, pp. 98-99). Knowledge in general as referring to an organized body of knowledge, or even a science, is usually called veda or vidya (words that are cognate with Latin videre and the English to wit). When the word veda is mentioned without further qualification, it always refers to the four collections of texts known as Rgveda, Yajurveda, Samaveda, and Atharvaveda. These contain the knowledge, the knowledge par excellence. The Vedas are the primary scriptures of Brah- manism and Hinduism. According to Brahminical orthodoxy they are neither of human nor Godly origin, for they are eternal and infallible. The text of the Vedas was revealed (not created) by omniscient Gods such as Brahma, or directly heard by inspired seers (Rishis) of old. Various enumerations and classifications of systematic knowledge, or sciences, have been transmitted; perhaps the most common ones refer to fourteen or eighteen locations of knowl. edge (vidyashtana): the four Vedas and the six auxiliary sciences to the Vedic texts (the sciences of articulation or phonology, prosody, grammar, etymology, astronomy/ astrology, and ritual/ceremony), religious and social law (dharmasastra), collections of ancient myths (purana), hermeneutics (mimamsa), and dialectics (tarka); the eighteenfold enumeration adds medicine (ayurveda), archery or the science of weapons in general (dhanurveda), and arthasastra, which includes politics and economy. These lists do not exhaust all the sciences known in ancient India, but they point to an attempt at an exhaustive classification of human cultural practices (Pollock 1985, p. 502). Sheldon Pollock, who examined the notion of sastra in classical India, points out that virtually every human activity had been codified into a science (or a theory, as he renders the word sastra), for instance, cookery, erotics (kamasastra), thievery (caurasastra), agriculture, mathematics, logic, ascetic renunciation, and spiritual liberation. As a rule (there are notable exceptions), the various sciences have not been discovered by their practitioners. Rather, all practice is said to be derived from previously existing knowledge. Science itself is primordial; it is not accumulative, and can only decrease with time. In Buddhist texts (both in India and Tibet) one encounters a list of five places or locations of knowledge (vidyasthanas) that are to be cultivated by the Bodhisattva on his way to enlightenment. The first of these, the inner science or the own science (adhyatmavidya), is specific to Buddhists, the other four--the science of logical reasons, grammar, medicine, and arts and crafts are external and considered common to Buddhist and non-Buddhists (Seyfort Ruegg 1995, pp. 9-10). However, the status of the science of reasons, that is, philosophy/dialectics/logic, was ambiguous. Although its position following the inner science clearly implies that it is an external (or non-Buddhist) science, it was sometimes considered to be part of the Buddhist teachings. The science of logical reasons could be assimilated either to tarka, dialectics, which have nothing particularly Buddhist about them, or it could be understood as the science of the means of knowledge (pramana), as expounded by Dharmakirti (seventh century) and his followers that was closely associated to the 116 . ENCYCLOPEDIA OF PHILOSOPHY 2nd edition

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KNOWLEDGE IN INDIAN PHILOSOPHY understanding and interpretation of the Buddhist teach- ings (Seyfort Ruegg 1995, p. 105). Deliberation and rea- soning on the Buddha's teaching were widely perceived to be necessary steps before meditation. Traditionally, the study of the Buddhist scriptures was divided into three steps: listening to the Buddha's words, reflecting on them, and meditating on them. However, another term that is often used to convey the idea of knowledge is kala, sometimes translated by Cart and craft," refers to both "knowledge that" and "knowledge how." There are long lists of the various kalas (also called silpas), some of them enumerating sixty-four, some seventy-eight, some more than ninety types. A typical list would include the knowledges of writing, calculation, sculpting, painting, dancing, singing, playing on musical instruments, gambling, speaking courteously, various games, preparing drinks, preparing perfumes, composing poems in various meters, divination, poisons and antidotes, the movement of heavenly bodies, training horses and elephants, archery, and various forms of fighting. However, these terms for knowledge are not extensively treated in Indian philosophical texts, and except for the four Vedas, do not play an important role in Indian theories of knowledge. For Indian philosophers are not so much concerned with the nature of knowledge as such, but with the means of knowledge (pramana). reliable (Matilal 1977). All other schools admit that sense perception is a means of knowledge. The materialist school (Lokayata) is distinguished from other schools by its claim that only sense perception is valid. The Vaisesikas and the Buddhists after Dignaga (fifth century) admit two means of knowledge, namely, perception and inference. The Samkhyas admit verbal communication by a trustworthy person (aptavacana) besides these two; Buddhist philosophers before Dignaga, for example, Vasubandhu, also admit verbal communication to be a means of knowledge. Philosophers of the Nyaya tradition, with the notable exception of Bhasarvajna (ninth century), also admit analogy (upamana) as a fourth means of knowledge. The same position was held by certain Buddhists (Franco 2001). The Prabhakara Mimamsakas accept five means of knowledge: the previously mentioned four and presumption (arthapatti). The Bhasta Mimansakas and Advaita-Vedantins admit six means of knowledge: the previously mentioned five and absence (abhava) or nonperception (anupalabdhi). In nonphilosophical texts one also encounters inclusion (sambhava) and tradition (aitihya) as means of knowledge. Since inference and verbal communication are dealt with in separate entries, this entry will focus mainly on a discussion of perception. PRAMANA To the question "how can one know something?" all Indian philosophers would answer unanimously: by having a means of knowledge. This answer may sound almost tautological and no two significant philosophers would understand the term in exactly the same manner. Nevertheless, the term pramana played a crucial role in structuring the Indian epistemologies. It is around this concept, its definitions, and its varieties that Indian philosophy developed in its most dynamic period (roughly from the fifth to the twelfth century). The most important means of knowledge are sense perception (pratyaksa), inference (anumana), and verbal communication (sabda), under which sacred writings such as the Vedas or the teaching of the Buddha are subsumed. What are the means of knowledge (pramana)? The number of means of knowledge that are accepted by the different schools of thought varies strongly. Mad- hyamaka Buddhists like Nagarjuna, skeptics like Jayarasi (Franco 1994), and monists of the Advaita-Vedanta tradi- tion like Sriharsa, all of whom deny the possibility of knowledge, obviously accept no means of knowledge to be PERCEPTION AND SENSES Perception here refers primarily to sense perception. Indeed, the Sanskrit word that is usually rendered by perception is pratyaksa; it contains the semantic elementakse-which means "eye." However, in some cases such as mental perception of feelings or the extrasensory perception of Yogis, the senses play no role in its arising. Perception is usually said to arise from sense and object. In this connection one has to emphasize the distinction between sense (or sense-faculty) and sense organ. The senses are not identical with the bodily organs to which they are associated. It is an extremely common mistake in Western publications to refer to the senses of seeing, hearing, smelling, touching, and tasting as eyes, ears, nose, skin, and tongue. Indian philosophers, however, clearly distinguish between them. Thus, according to Nyaya the sense of sight is not the eye, but an invisible ray of light that rests on the pupil of the eye and goes out to reach the object. The sense of hearing is not the ear, but a part of space-ether (akasa) that is enclosed in the ear. The sense of taste is not the tongue, but a watery substance in the form of half-moon that is spread at the front of the tongue. The sense of smell is a substance made of earth and is found inside the nose; its base is usually called nasaa cognate of nose ENCYCLOPEDIA OF PHILOSOPHY 2nd edition * 117

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KNOWLEDGE IN INDIAN PHILOSOPHY but sometimes also tripunika, that is, the three cavities," or "the triple cavity," which seems to indicate that its base is the root of the nose. The sense of touch, which is sometimes interpreted as a sense of temperature, is also found inside and throughout the body, not only on the skin. Already in the early philosophy of nature, the senses were considered to be material. Each sense except for the auditory-was composed of the four material elements (earth, water, fire, and wind). Their special ability to grasp a certain elemental quality was explained as being due to their composition. The gustatory sense consists mainly of water, and it possesses the quality to be grasped, namely, flavor (VS 8.16-17). Although the element earth also possesses flavor, this quality is not predominant in it. The elemental constitution of the senses is based on the principle that "similar perceives similar." The Nyaya, Vaisesika, and the Mimamsa accepted the socalled accumulation theory of qualities in elements. * Except for hearing, the senses are made of special invisible atoms. Therefore, they cannot perceive themselves and can only be inferred: From the fact that one has a visual awareness, one infers that one has a sense of sight. According to the Buddhists the senses are made of a special subtle and transparent matter (bhutaprasada); the transparency of this matter is used to explain both its invisibility and its receptivity to other forms. Unlike normal matter, the subtle matter of which the senses are made does not obstruct other matter. When Indian philosophers write about the senses, they think above all about sight. The sense of sight is often used as a model for all other senses; hearing is treated cursorily, the other senses are hardly ever discussed. PERCEPTION AND THE CRITERION OF TRUTH For a general discussion of truth and error, notably of false inferences, see the entry "Truth and Falsity in Indian Philosophy." The problem of truth is addressed here only in respect to perception. The earliest discussion on the criterion of truth can be found in a short passage of an anonymous Mimamsa commentary that is now lost except in quotations and references in later sources that refer to its author simply as "The Commentator" (vsttikara) (Frauwallner 1968, pp. 107-111). It may seem odd that a Mimamsa сommentary that deals with Vedic exegesis should contain digressions on perception and related epistemological problems. Indeed, the rationale for the treatment of perception in Mimamsa writings was originally a negative one: the rejection of sense perception as a means for the apprehension of the dharma, understood here as Vedic injunctions (MS 1.1.4). According to the Commentator, "true perception is the arising of awareness when the senses of a man are in contact with precisely that which the awareness has for its object" (SBh 26.3-4). In other words, when the internal object that appears in the awareness and the external object that is in contact with the senses are identical, the resulting awareness is perception. This is, however, only a general definition. How can one know whether a specific awareness has arisen when the senses are in contact with the same object that appears in the awareness, or whether they were in contact with a different object? One may have an awareness of silver, but how is one to know whether the senses are in contact with silver, or with a glittering conch shell that produces an illusion of silver? The Commentator answers that a sublating awareness (badhaka-jnana) arises in respect to a false awareness and asserts its falsity, "That was not silver, the awareness was false." However, the problem with sublation (badha) as a criterion of truth is that the sublating awareness arises later, sometimes much later, than the false awareness. How does one know when an awareness is true or false at the time it arises? At that moment there is no difference whatsoever between true and false awarenesses, for the person who mistakes a conch shell for a piece of silver also thinks, "My sense of sight is in contact with silver." The Commentator suggests that when the causal complex that produces the awareness is disturbed, the awareness is false; otherwise it is true. For instance, when the mind is disturbed by hunger, when the sense of sight is disturbed by an illness, or when the external object is too subtle, the awareness is false; when the causal complex is not disturbed, the awareness that arises from it is PERCEPTION AND CONTACT There was a strong debate that lasted for centuries between Buddhists and Naiyayikas on the question of whether the sense and the object must be in contact to produce sense perception. The debate concerned only the senses of seeing and hearing (for everyone agreed that the other senses must be in contact with their objects). The Naiyayikas and the Mimamsakas maintained that all senses must be in contact with their objects to perceive them. In response to the Buddhist objection that sight perceives objects at a distance and objects that are larger in size than the sense itself, the Naiyayikas postulated an invisible ray of light that goes from the eye and enters in contact with the object. This ray of light has a broad tip so that it can be in contact with large objects. It is in this context that certain optical theories were developed (Preisendanz 1989). 118 . ENCYCLOPEDIA OF PHILOSOPHY 2nd edition

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KNOWLEDGE IN INDIAN PHILOSOPHY true. By this assertion the Commentator makes the true The concept of sublation may seem to presuppose a awarenesses the normal ones, those people usually have, coherence theory of truth, in which truth is defined by and errors are considered to be an exception. In other relations between statements (or in the Indian case, words, there is nothing inherently wrong in the cognitive between awarenesses), not in terms of relations between process itself. However, the assertion that a true aware- statements and reality, as is the case in a correspondence ness is produced by undisturbed causes tells one what theory of truth. However, in general Indian philosophers happens, but not when it happens. That a particular always seem to presuppose a correspondence theory of awareness has arisen from undisturbed causes remains to truth. Even though only an awareness can sublate, or be proved for every single case. The Commentator main-. assert the falsity of another awareness, this is possible tains that if one earnestly searches and does not find any only because the sublating awareness corresponds to realfault with the causal complex, then, because there is no ity and the sublated awareness does not. The direct relaproof to the contrary, we should think (manyemahi) that tionship between the two awarenesses remained the awareness is true. problematic, and in the final analysis unexplained. To the Later Mimansakas like Kumarila (seventh century) question of how an awareness that arises later can apprehad to deal with problems that the Commentator had left hend the inexistence of an object of an earlier awareness open. For instance, in certain cases one is not in a posi Jayanta, a Nyaya philosopher of the ninth century, simply replies, "What (can) we do, since this is the way the awaretion to rectify an erroneous awareness (SV, Vstrikaragrantha 23). A certain illness of the eye distorts vision in ness arises?" (NM I 171.12) such a way that one sees a double moon. In such cases the The correspondence theory of truth is clearly premistaken person learns in his or her communication with supposed by the Nyaya criterion of truth called efficiency other people that there is only one moon in the sky. of activity (pravyttisamarthya). The Naiyayikas argued in Kumarila also had to deal also with errors that are imma favor of a pragmatic principle of confirmation. When one nent to the cognitive process. Such errors would render has an awareness of water, one goes toward the perceived all everyday awarenesses, even those that are usually con water, and if this endeavor is efficient, that is, if one sidered true, essentially erroneous. For instance, accord obtains water, then the awareness is true. Otherwise it is ing to the Buddhists, every empirical awareness involves a false (NBh, Introduction). The discussions of the efficonceptual construction. Empirical awarenesses have ciency of activity seem to presuppose a difference in the wholes (avayavin) and universals (jati) as their objects, reliability of the senses. The awareness that has to be conbut these have no correspondence in reality. Even a sim- firmed is usually a visual one, and the confirming awareple awareness such as "this is a cow contains at least two ness is of touch or taste (as in the case of water). The parts. The part this refers to some concrete individual, the expression efficiency of activity is often interchangeable part cow to a universal "bovinity" that, at least according with the expression "obtainment of an object/purpose to the Indian realists, is a single eternal entity present in (arthaprapti). The Naiyayikas argue that when the awareall cows and is responsible for the fact that a great num ness is true the object is obtained, and when it is false the ber of different individuals are all called cow. object is not obtained. The Buddhists have adduced powerful arguments Another similar but different criterion of truth is against the existence of such universals. For instance, the used by Dharmakirti and his followers. Dharmakirti universal bovinity cannot be present entirely in one indi argues that the production of efficient action vidual cow, because if this were the case, it would not be (arthakriyakaritva) indicates whether an awareness is valid able to reside in other cows. Nor can it be partly present in or not. The difference between this and the Nyaya criteone cow, because it has no parts. Thus, all empirical aware rion is that the former is not used to prove that the object nesses are false because they involve conceptual construc of the awareness is real. According to Dharmakirti a false tions, and conceptual constructions are faulty because they awareness can nevertheless be valid. Although all awareinvolve incoherent notions such as that of a universal. nesses that involve conceptual constructions are false, Kumarila's response to such objections was to refuse a some such awarenesses (notably inferential awarenesses philosophical engagement. No matter what arguments the that always involve universals) lead to successful activity. Buddhists may raise: If everybody invariably has the aware- Dharmakirti likens their case to someone who mistakes ness in respect to a certain individual, this is a cow," then diamond rays for the diamond itself (PV, 3.57). Although such awareness cannot be sublated, for it is more powerful such a person acts on a false awareness, he or she is neverthan the other awareness that has found fault in it. theless successful in obtaining the diamond. Another ENCYCLOPEDIA OF PHILOSOPHY 2nd edition * 119

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KNOWLEDGE IN INDIAN PHILOSOPHY important aspect that distinguishes the Buddhist criterion from that of the Nyaya is that the object seen and the object obtained can never be the same. According to the Buddhists everything is momentary. Thus, the water seen and the water obtained are not the same water. Another difference between the two criteria is due to the rejection of the substance. The Buddhists denied that there is a certain substance such as water that has properties such a color and flavor. Thus, the seen water and the tasted water are in fact entirely different kinds of atoms that are only loosely connected by a causal relationship (PVSV 70.14f) The preceding discussion treats the realistic schools. The topic of the criterion of truth in idealistic and illusionistic schools, which consider all empirical awarenesses to be false, arises from a different set of problems and specific metaphysical doctrines. For instance, certain Buddhist Yogacaras consider only those awarenesses to be true that have a correspondence in an unconscious awareness called alayavijnana. Vedantins like Sankara (700?-750?) consider empirical awarenesses to be provisionally true until one attains the realization of the identity between atman and brahman. Everyday awarenesses are like a dream. As long as the dream lasts, the awarenesses of the dream are considered true; when one wakes up they are realized to have been false. These positions, however, are usually ignored in the philosophical debates in classical India. factor that could produce the sublation (the proximity) is absent and the sublation does not arise. Besides, one may simply die before the sublation is produced. It is impossible to know at any given moment which awarenesses are true and which are going to be sublated in the future. Jayarasi's argument bears an obvious similarity to Karl Popper's assertion that the scientific doctrines one holds to be true are only those that are not yet refuted, but they are liable to be so in the future. Of course, the basic concerns of Jayarasi and Popper are entirely different. The efficiency of activity based on an awareness also cannot be used as a criterion of an awareness' truth because the claim of efficiency also has to be confirmed: it has to be apprehended and its apprehension has to be ascertained as nonerroneous by another efficiency of activity. It is not true that an awareness will give satisfaction if and only if it is true. To repeat James's example, the pragmatist claims that if one believes that there are tigers in India, and one goes to India and finds tigers there, then, to use the Nyaya terms, the activity is efficient and the awareness is true. However, as critics of pragmatism point out, one may go to Syria, find some tigers there and think that one is in India, or one may go to India and mistake some big cats for tigers, or one can even go to India find tigers and mistake them for cats. Thus, a confirming awareness must be confirmed in its turn, and this would lead to an infinite regress. The arguments against Nyaya apply to the Buddhist criterion of production of efficient action, except that the Buddhist faces some additional difficulties due to the doctrine of momentariness and the rejection of universals. VERBAL COMMUNICATION A SKEPTICAL RESPONSE TO THE CRITERION OF TRUTH Jayarasi Bhatca (fl. c. 800), a skeptic philosopher loosely affiliated to the materialist Lokayata school, raised a devastating critique of the various criteria of truth. The production by undisturbed causes, he says, cannot be used as a criterion, because it cannot be known whether the causes are undisturbed. The senses do not apprehend themselves, and therefore, cannot apprehend whether their functioning is disturbed or not. Nor can their proper functioning be inferred, because there is no inferential sign on which the inference can rest. If the correct awareness itself is considered to be such a sign, then the argument results in mutual dependence. The awareness is correct because the causes are undisturbed, and the causes are undisturbed because the awareness is correct. Also, the absence of sublation cannot be used as a criterion of truth. At most one can say that those awarenesses that are sublated are false, but not that those that are not sublated are true. It is possible that sublations do not arise because some causal factor is missing. A person may have an illusion of water in respect to sun rays and not go toward the place of the sun rays. Thus, the causal The two main questions with which Indian philosophers who deal with verbal communication are concerned are: (1) What is the process by which one understands the meaning of words? (2) How does one know that words, once understood, are truthful? Concerning the first question see the entry "Philosophy of Language in India." This entry will focus only on the second question. The veracity of words is crucial to Indian philosophers because knowledge derived from the sacred writings depends on it. Clearly, most religious doctrines could not be established by other means of knowledge such as perception or inference. Furthermore, when one is faced with a plurality of religious traditions, the question invariably arises as to which tradition can be trusted, for all of them cannot be true. Thus, each tradition had to adduce some arguments to justify the teachings it considered to be true. According to the Nyaya-Vaisesika the 120 ENCYCLOPEDIA OF PHILOSOPHY 2nd edition

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KNOWLEDGE IN INDIAN PHILOSOPHY Veda was revealed to normal human beings by the Rishis who have direct knowledge of it, and consequently the truthfulness of the Veda, at least as known to one, depends on the truthfulness of the Rishis. Vatsyayana (fifth century) enumerates three characteristics that must be present if one is to be considered a trustworthy or authoritative person: One has to have direct knowledge of things, compassion toward living beings, and the desire to teach things as they are. There are basically two ways to prove the validity of a statement made by a reliable person. Either the reliability of the person making the statement is established, or the truthfulness of the statement is directly perceived or inferred. Ideally, the statement should be directly confirmed, but in the case of the Veda this is not always possible, for the truthfulness of a Vedic statement is often beyond the realm of examination by normal human beings, for example, statements concerning heaven. Vatsyayana's proof is based on the assumption that the different parts of the Veda have the same authors. The statements of the Ayurveda and magical spells (mantra), which according to Vatsyayana form a part of the Veda, have visible results. When certain spells that are intended to remove poison are uttered, the poison is actually removed. Furthermore, certain parts of the Veda proper also have visible results, for example, "One desirous of a village should perform a sacrifice" (gramakamo yajeta). Vatsyayana's inference of the validity of the Veda runs as follows: From the parts of the Veda that have visible results one infers the trustworthiness of its authors (qualified by the three characteristics mentioned earlier), and because these are the same trustworthy authors as those of the rest of the Veda, the validity of the latter can be inferred. The proof of reliability of a person was further developed by Dharmakirti, who was concerned with the trustworthiness of the Buddha. It was clear to Dharmakirti, who was conscious of the problem of induction, that the argument as it appears in Nyayabhasya and Nyayavarttika is not valid: Just because someone is trustworthy in matter x (e.g., medicine) does not necessarily mean he or she is trustworthy in matter y (e.g., rituals and sacrifices). Consequently, Dharmakirti modifies the argument in two points. First, he does not simply draw an inference from trustworthiness in any part x to trustworthiness in any part y; he allows such an inference only when one moves from the main part of a teaching to its secondary part. Second, the logical reason used in Dharmakirti's inference is not just the sameness of the author, but includes the motivations of the speaker in his reasoning, for example, one should consider whether the speaker may have a motivation to lie. More specifically the proof runs as follows: The main part of the Buddha's teaching are the four noble truths. These truths can be established independently of the Buddha's authority through perception and inference. Once the four noble truths are established, one can conclude that the Buddha was knowledgeable at least in matters of salvation. From such knowledge one infers that the Buddha has practiced various means for salvation for a long time (i.e., during many lives). However, he need not have practiced for such a long time had he been interested only in his own salvation. Therefore, his efforts were for the sake of other people. His engagement for the benefit of other (in fact, all) living beings in this manner presupposes compassion. Furthermore, the Buddha does not lie, because he has nothing to gain by lying. Therefore, the Buddha is trustworthy. Consequently, one can infer the truth in secondary matters in his teachings that are not open to an examination by normal human beings. As an example for such a domain Dharmakirti mentions the law of karma. Later Tibetan commentators also mention certain monastic rules that cannot be established independently of the Buddha's word (Tillemans 1993). Interestingly, the reliability of the Gods must also be established. The Saiva commentator Sadyajyotis (ninth century) says: Why is the word of Siva authoritative? Because he is a pure, infallible, gracious lord endowed with knowledge that extends to everything. And his words whose objects are seen can be perceived as fruitful. Therefore, it can be inferred that his words whose objects are not seen are fruitful in exactly the same manner (Franco 1997, pp. 41-42). THE OTHER PRAMANAS It is unfortunate that the other means of knowledge receive little attention in the Indian tradition. The Naiyayikas and the Mimamsakas have accepted analogy or comparison (upamana) as a separate means of knowledge, but discussions about it remain rudimentary. It is defined as "proof of what has to be proved from similarity to something well known" (NS 1.1.6). The stock example for the use of analogy is: Someone does not know what a gayal is and is told "a gayal is like a cow." He or she then goes to the forest and is able to recognize a gayal on seeing it. Another example concerns the recognition of something from its name. For instance, knowing that the herb called bean leaf is like a bean, a person who finds this herb realizes that this is the thing to which the name applies. The Naiyayikas were not unanimous as to what exactly constitutes the means of ENCYCLOPEDIA OF PHILOSOPHY 2nd edition 121

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KNOWLEDGE IN INDIAN PHILOSOPHY knowledge in this case. The older Naiyayikas argued that the statement of the instructing person is the means of knowledge; the later Naiyayikas maintained that it is the cognition of similarity that brings about the understanding. Means of knowledge, by definition, must lead to an awareness of an object previously unknown, for if the object is already known, its awareness will be nothing but recollection, and, except for the Jainas, no school of for the lainas. po school of thought accepted memory as a means of knowledge. There was some uncertainty as to what exactly is new about the object of the awareness resulting from comparison. To repeat the stock example, when one recognizes that a certain animal is a gayal, it is not the animal as such that is the object of the comparison, because it is apprehended by sense perception. It is also not that there is a similarity between the cow and the gayal, because the similarity was already conveyed by verbal communication. Nor can the resulting awareness consist in the conclusion that the particular animal observed for the first time is a gayal, because in this case comparison would not be different from inference. Indeed, some Mimansakas who professed this opinion were criticized by the Naiyayikas for reducing comparison to inference (Bhatt 1962, pp. 290ff). The Naiyayikas (NBh 1.1.6) as well as some Buddhists of the Kushana period (Franco 2001, pp. 11-12) maintained that the result of comparison is the awareness of the designation, that is, that the animal seen in the forest is called gayal. Nevertheless, it remained controversial what distinguishes analogy from inference on the one hand and from verbal testimony on the other, and different opinions were put forward on this issue. The Buddhists, the Vaisesikas, and the Samkhyas did not consider analogy to be a separate means of knowledge (Bhatt 1962, pp. 289-307). Another potentially interesting means of knowledge that remained underdeveloped is arthapatti. There is no agreed translation for this means of knowledge, and it is rendered by presumption, supposition, implication, negative implication, circumstantial evidence, and so on. The two most common examples for arthapatti are: (1) Knowing that someone is alive and not finding him or her at home, one concludes that he or she is outside. (2) One is told that fat Devadatta does not eat during the day, and one concludes that he eats at night. The two examples are distinguished as presumption based on something seen (dpstarthapatti) and presumption based on something heard (srutarthapatti). In later texts one distinguishes six types of presumption according to the six means of knowledge on which a presumption can be based. The examples mentioned in this connection seem construed and artificial and are not taken from an actual philosophical discourse or from everyday life. For instance, presumption based on inference is illustrated as follows: One knows by inference that the sun moves (its movement cannot be perceived, but is inferred because it changes its place in the sky). However, things that move usually possess limbs such as legs. Thus, a conflict between two means of knowledge arises, and this conflict is resolved by the presumption that the sun has a moving power. Conflict or apparent contradiction (anupapatti) between two means of knowledge is the essential ingredient of arthapatti, and the resulting presumption resolves the conflict. The contradiction must be apparent. If the contradiction is real, for example, two awarenesses about the same object, one perceiving it as silver and the other as mother-of-pearl, the way of resolving it is by rejecting one of the alternatives as false, not by making a new supposition. Among the important philosophical schools, only the Mamamsa and Vedanta accepted presumption as an independent means of knowledge (Bhatt 1962, pp. 313-340). The Bhatta Mimansakas accepted absence (abhava) as a sixth means of knowledge. A discussion as to how mere absence or nonexistence can be an object of valid cognition appears already in NS 2.2.7-12. An objector argues that a negating cognition cannot be valid because it cannot refer to an object in reality. The objection is rebuked by reference to common experience. When some pieces of cloth are marked and some are unmarked, one can be told "Fetch the unmarked pieces," and one is able to do so. The Naiyayikas, however, just like the Vaisesikas, the Samkhyas, the Buddhists, and the Prabhakara Mimamsakas, considered absence or nonperception to be included in inference. Prasastapada identified absence with inference from absence of effect to absence of cause. CIRCULARITY OF PRAMANAS A general objection to the pramanas as such has been raised from the earliest times. If everything is established by means of knowledge, how are the means of knowledge themselves established? If they are established by other means of knowledge, these other means also have to be established by yet other means of knowledge and thus an infinite regress results. If the means of knowledge were to establish one another, a circularity would result. If one claims that the means of knowledge need not be established, the initial position that everything has to be established by means of knowledge has been abandoned. 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KNUTZEN, MARTIN and its surroundings. However, it remained unclear how this metaphor should actually apply to the pramanas, and some, like Nagarjuna (VV, verses 30ff) even argued that actually a lamp cannot illuminate itself. See also Atomic Theory in Indian Philosophy; Causation in Indian Philosophy; Liberation in Indian Philosophy; Logic, History of: Logic and Inference in Indian Philosophy; Meditation in Indian Philosophy; Mind and Mental States in Buddhist Philosophy; Philosophy of Language in India; Self in Indian Philosophy; Truth and Falsity in Indian Philosophy; Universal Properties in Indian Philosophical Traditions. Franco, Eli. "Fragments of a Buddhist Pramana-Theory from the Kusana Period." Bukkyo Dendo Kyokai Fellowship Newsletter 4 (2001): 2-12. Frauwallner, Erich. Materialien zur Altesten Erkenntnislehre der Karmamimamsa. Vienna, Austria: Graz, Koln, Bohlau in Kommission, 1968. Matilal, Bimal Krishna. The Logical Illumination of Indian Mysticism: An Inaugural Lecture Delivered before the University of Oxford on 5 May 1977. Oxford, U.K.: Clarendon Press, 1977. Namai, Mamoru. "A Survey of Barhaspatya Philosophy." Indological Review (Kyoto) 2 (1976): 29-74. Pollock, Sheldon. "The Theory of Practice and the Practice of Theory." Journal of the American Oriental Society 105 (3) (1985): 499-519. Preisendanz, Karin. "On Atmendriyamanorthasannikarsa and the Nyaya-Vaisesika Theory of Vision." Berliner Indologische Studien 4-5 (1989): 141-213. Seyfort Ruegg, David. Ordre spirituel et ordre temporel dans la pensee bouddhisque de l'Inde et du Tibet: quatre conferences au college de France. Paris: College de France, Institut de civilisation indienne, Diffusion De Boccard, 1995. Tillemans, Tom J. F. Persons of Authority. Stuttgart, Germany: F. Steiner, 1993. Eli Franco (2005) Bibliography PRIMARY SOURCES NBh: Nyayabhasya of Vatsyayana in Taranatha Nyayatarkatirtha and Amarendramohan Tarkatirtha (ed.). Nyayadarsanam with Vatsyayana's Bhasya, Uddyotakara's Varttika, Vacaspati Misra's Tatparyatika and Visvanatha's Vrtti. Calcutta, India: 1936, 1944. NM: Nyayamanjari in V. K. S. Varadacharya (ed.) Nyayamanjari of Jayanta Bhatta with Tippani-Nyayasaurabha by the Editor, Mysore: Pracyavidyasamsodhanalayah, Maisuruvisvavidyalayah, 1969-1983. NV: Nyayavarttika of Uddyotakara. See NBh. NS: Nyayasutra in Ruben, Walter, Die Nyayasutra's. Text, Obersetzung, Erlauterung und Glossar. Leipzig, Germany: 1928. PV: Pramanavarttika of Dharmakirti. Ed. Y Miyasaka. Acta Indologica, Vol. 2. Narita, Japan: Naritasan Shinshoji, 1971-1972 PVSV: Pramanavarttikasvavrtti in R. Gnoli (ed.), The Pramanavarttikam of Dharmakirti. Rome, Italy: 1960. MS: Mimamsasutra in Frauwallner 1968. VV: Vigrahavyavatani of Nagarjuna in K. Bhattacharya E.H. Johnston and A. Kunst, The Dialectical Method of Nagarjuna. Delhi, India: 1978. VS: Vaisesikasutra in Muni Jambuvijayaji (ed.), Vaisesikasutra of Kanada with the Commentary of Candrananda. Baroda, India: Oriental Institute, 1961. SBh: Sabarabhasya in Frauwallner 1968. SV: Slokavarttika of Kumarila in Svami Dvarikadasa Sastri (ed.), Slokavarttika of Sri Kumarila Bhatta. With the Commentary Nyayaratnakara of Sri Parthasarathi Misra. Varanasi, India: Tara Publications, 1978. SECONDARY SOURCES Bhatt, Govardhan P. Epistemology of the Bhatta School of Purvamimansa. Varanasi, India: Chowkhamba Sanskrit Series Office, 1962. Chakravarty, Pulinbihari. Origin and Development of Samkhya System of Thought. 2nd ed. Delhi, India: 1975. Franco, Eli. Perception, Knowledge, and Disbelief: A Study of Jayarasi's Scepticism. 2nd ed. Delhi, India: 1994. Franco, Eli. Dharmakirti on Compassion and Rebirth. Vienna, Austria: Arbeitskreis fur Tibetische und Buddhistische Studien, Universitat Wien, 1997. KNUTZEN, MARTIN (1713-1751) Martin Knutzen, the German Wolffian philosopher, studied at the University of Konigsberg and became an extraordinary professor there in 1734. Because he was a Wolffian, even though an unorthodox one, he never attained a full professorship in that Pietist-dominated school. However, because he was also a Pietist, Knutzen could never attain such a position in other German universities where Wolffians held the power of appointment. Knutzen disagreed with Christian Wolff on several significant points. His Commentatio Philosophica de commercio Mentis et Corporis (Philosophical Commentary on the Relation between Mind and Body; Konigsberg, 1735) was an attempt to reconcile Wolff's theory of preestablished harmony with the Pietist doctrine of physical influence. He extended the problem beyond Wolff, from the relation of soul and body to the interrelations of simple substances in general. In this and in a panpsychistic metaphysics, he was closer to Gottfried Wilhelm Leibniz than to Wolff. Knutzen, in his cosmological work Vernunftige Gedanken von den Cometen (Rational thought concerning comets; Konigsberg, 1744), was one of the first philosophers in Germany to accept, at least partially, the Newtonian theory of gravitational attraction. His theological work was derivative and of little significance. ENCYCLOPEDIA OF PHILOSOPHY 2nd edition * 123