Synopsis Traditionally, six schools of thought propagated Vedic wisdom, each from a different philosophical perspective. Each of these perspectives or darshanas is associated with a famous sage who is the author of a sutra (code) expressing the essence of his darshana. The sad-darshana (six philosophical views) are nyaya (logic), vaisesika (atomic theory), sankhya (analysis of matter and spirit), yoga (the disciplinie of self-realization), karma-mimamsa (science of fruitive work) and Vedanta (science of God realization). The sad-darshanas are termed astika philosophies (from asti, or “it is so”), because they all acknowledge the Veda as authoritative. Beginning with nyaya, each of the saddarshanas in their own turn presents a more developed and comprehensive explanation of the aspects of Vedic knowledge. Nyaya sets up the rules of philosophical debate and identifies the basic subjects under discussion: the physical world, the soul, God and liberation. Vaisesika engages the method of nyaya or logic in a deeper analysis of the predicament of material existence by showing that the visible material forms to which we are all so attached ultimately break down into invisible atoms. Sankhya develops this analytical process further to help the soul become aloof to matter. Through yoga, the soul awakens its innate spiritual vision to see itself beyond the body. Karma-mimamsa directs the soul to the goals of Vedic ritualism. Vedanta focuses on the supreme spiritual goal taught in the Upanisads.