History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c14.s1.30

c14.s1.30

Regarding the dates of the philosophical systems nothing definite is known. But in the opinion of the most competent authorities on the subject like Max Muller, Macdonell and others it may be stated, without the risk of any serious or adverse criticism, that the six systems of Hindu philosophy gradually took their shape from the time of Buddha (5th century B.C.) to about 100 B.C., accompanied by the growth and expansion of Jainism and Buddhism. At the same time it cannot, however, be denied that they are genetically related to the doctrines preached in the Upanishads and Brahmanas of earlier ages.