Within Indian philosophy, there are nine schools of thought. Six of these "orthodox" points of view accept the Vedas: Samkhya, Yoga, Nyaya, Vaisheshika, Purva-Mimamsa, and Vedanta. The other three—Carvaka (no longer existent), Buddhism (with its wide spectrum of sects), and Jainism do not accept the authority of the Vedas and are considered unorthodox.
