The Upanishads, dating largely from the 8th to the 6th centuries BCE, are the “wisdom literature” of the Vedas. Most Upanishads take the form of dialogues between teachers and students. They turn from the rites of the fire altar that had been the main focus of discussion in the earlier Vedic literature to the question of the deeper, inner meanings of ritual, especially as it can give insight into the origin, basis, and support of the universe. The Upanishads and their interpretations are sometimes called Vedanta, literally the “end of the Vedas.”