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PREFACE.
"The Science of Thought' is intended to be a brief exposition of the view of Jaina Philosophy on the nature and types of Jnana (knowledge) and the working of mind in reference to logical inference. The book is not a translation of any particular work, though it is principally based on two small treatises, the Pariksa Mukha and the Nyaya Dipika.
The author of the first-named work was a certain Acharya (philosopher-saint) known by the name of Sri Manikyananda, who flourished about the commencement of the ninth century of the Christian era. The other book, the Nyaya Dipika, is a much later work, and was composed by Yati Dharmabhusana about the year 1600 A. D. Both the Pariksa Mukha and the Nyaya Dipika are, however, based on earlier and bigger works, and do not claim to be exhaustive.
In presenting to the modern reader the views of the Jaina Siddhanta (Philosophy) on such an important subject as the Science of Chought, I cannot help giving an expression to a consciousness
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