Samkhya, Yoga and atheistic materialism are [the?] three schools of philosophy. One should study philosophy because it helps one to distinguish between dharma and adharma [evil] in the study of the Vedas, between material gain and loss in the study of economics and between good and bad policies in the study of politics. [Above all,] it teaches one the distinction between good and bad use of force. When the other three sciences are studied by the light of philosophy, people are benefited because their minds are kept steady in adversity and prosperity and they are made proficient in thought,
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