"Yoga (Sk.). (1) One of the six Darshanas or schools of India; a school of philosophy founded by Patanjali, though the real Yoga doctrine, the one that is said to have helped to prepare the world for the preaching of Buddha, is attributed with good reasons to the more ancient sage Yâjnawalkya, the writer of the Shatapatha Brâhmana, of Yajur Veda, the Brihad Âranyaka, and other famous works. (2) The practice of meditation as a means of leading to spiritual liberation. Psycho-spiritual powers are obtained thereby, and induced ecstatic states lead to the clear and correct perception of the eternal truths, in both the visible and invisible universe."