INDIAN PHILOSOPHY. It is not possible to determine exactly the dates of the Indian systems of philosophy. The fol lowing, however, may be accepted as the broad divisions of the philosophic development :—I. The Vedic period (c. 1500-600 B.c.) ; II. The Epic period (600 B.C. to A.D. 200) ; III. The period of the six systems (A.D. 200).