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SENSORY AND MENTAL COMPREHENSION
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complete destruction of the knowledge-obscuring veils takes place. For the emergence of recollection also this condition is necessary. The second factor is nothing but the external conditions that bring the disposition to maturation. It includes the observation of similar objects and the like. Now, mere observation of similar objects and such other conditions are not enough to arouse recollection, since sometimes it happens that such conditions as the observation of similar objects and the like being present recollection does not arise. All the external conditions may be there to arouse recollection and, yet, recollection does not emerge because of internal incompetency. Unless the mental make-up is efficient enough to recollect what has been experienced in the past, no emergence of recollection is possible. Mere external causes cannot give rise to internal activities. In co-operation with internal states only external conditions can produce certain mental functions. For this very reason the Jaina thinkers admit both internal and external conditions as the cause of recollection. One without the other is incapable of giving rise to it. However, when the requisite conditions such as the desstruction-cum-subsidence of the obstructive veils, observation of similar objects, and the like, are at work to bring the latent mental trace to maturation, the disposition produces recollection. The external conditions necessary for the act of recalling may be classified into three types. These three types represent the three laws of association and suggestion of ideas. They help in reviving a previously perceived phenomenon. They are the law of contiguity, the law of similarity, and the law of contrast. The contents of recollection are expressed by a form of the pronoun 'that', inasmuch as it refers to our past percepts. Thus, all the cognitions that point to their contents as that jar, that cloth, that ear-ring, and the like, are the cases of recollection. The line that distinguishes recollection from perception is that perception always refers to its content as existing in the present, whereas recollection always has reference to its content as existed in the past. There are other differences as well. We need not state them here. Now, let us turn to another factor of memory, viz., recognition. RECOGNITION
Recognition is a synthetic judgment born of perception, i.e., direct sensory observation and recollection. It is represented by
