The Bārhaspatyas say that there are only two sciences: the science of business and the science of government, and the triple Vedas are merely an abridgment for a man experienced in wordly affairs.
But Kautilya holds that these four and only these four are the sciences (natural and logical science, the triple Vedas, the science of business, the science of government); wherefore it is from these sciences that all that concerns righteousness and wealth is learnt, therefore they are so called.
—Kautilya, in the Arthaśāstra, 1.2:4-9
