Vaisheshika

Vaisheshika starts from a question that sounds modern: what are the basic kinds of thing there are, and how do they combine into the world we experience? Its answer, laid out in Kanada's Vaisheshika Sutra, is a short list of categories, substance, quality, action, generality, particularity and inherence, later joined by a seventh, non-existence, meant to be exhaustive. Every dispute about what exists can in principle be settled by asking which category a thing belongs to.

The substance category does the heaviest lifting. Vaisheshika holds that the four material elements, earth, water, fire and air, are ultimately built from indivisible, eternal atoms, paramanu, too small to be perceived on their own. Two atoms combine into a dyad, three dyads into a triad, and so on upward until the compound is large enough to see, smell or touch. It is one of the earliest systematic atomisms anywhere, built to explain ordinary physics rather than to speculate about it.

What keeps the system from being pure mechanism is adrishta, the unseen force. Atoms combine and separate according to law, but adrishta, the accumulated and largely invisible residue of a person's past actions, is what nudges particular combinations to occur in a morally ordered universe rather than a random one. It is Vaisheshika's version of karma, doing quiet metaphysical work behind an otherwise strict natural philosophy.

The system did not stay separate for long. From around the eleventh century, Vaisheshika's categories and Nyaya's logic and epistemology were increasingly read as one combined project, Nyaya-Vaisheshika, in which Vaisheshika supplied the furniture of the world and Nyaya supplied the tools for reasoning carefully about it.

Vaisheshika's later history is less a story of new categories than of a new method applied to the old ones. In the eleventh century Udayana, writing in a milieu where the combined Nyaya-Vaisheshika project was already the dominant framework, composed the Nyayakusumanjali, a sustained argument that adrishta and the atomic order it worked through pointed beyond themselves to a single intelligent cause. Udayana laid out nine separate lines of argument for a creator, drawn from the world's order, from the need for an agent to set atoms into their first combinations, from language and scripture as testimony, and from analogy with ordinary made things, and organized them so that a critic had to answer each in turn rather than the position as a whole.

That style of argument, precise, enumerated, built for point by point rebuttal, became the discipline's defining habit. Writing in the early fourteenth century, Gangesha's Tattvacintamani took the same appetite for exact definition and applied it to the machinery of inference itself, inaugurating what later scholarship calls Navya Nyaya, the new logic, a tradition of technical terminology for reference, negation and property location so precise that modern logicians studying Indian philosophy still use it to test formal theories of definition. Vaisheshika supplied that tradition its categories; Udayana and Gangesha supplied the method that made arguing about them a matter of stated premises rather than assertion, and the atomism and the unseen force the first article describes were, by the time of Navya Nyaya, arguments to be proven rather than positions to be stated.