A yogi is a practitioner of yoga. The term “yogi” is used broadly to refer to sannyasi or practitioners of meditation in a number of Indian religions. The Sanskrit word “yoga” has many meanings, and is derived from the Sanskrit root “yuj”, meaning “to control” (self discipline), “to yoke” (egolessness) or “to unite” (live in a cosmic consciousness). Someone who practices yoga or follows the yoga philosophy to a high level of attainment is called a yogi or yogini. They are inspired by the same inherent urge of the innermost consciousness of man. Both of them are seekers of the Absolute Truth. Both of them refuse to remain content with the knowledge of the finite transitory relative truths of the world of normal human experience. They feel within themselves a deep yearning for the discovery of the infinite eternal Absolute Reality behind and beyond them. They devote themselves to the quest of the ultimate root of all existence, the ultimate Cause and Ground of this world-order, the ultimate solution of all the problems of human knowledge and experience. The human consciousness is ordinarily imprisoned in the closed domain of space, time and relativity. It is as it were condemned to live and move under spatial and temporal limitations, to think and know in terms of relativity, causality and reciprocity. It is given opportunities to develop and expand and enrich itself within the compound of this prison; but it is not permitted to go beyond the walls of this prison. It seems that human knowledge and experience must necessarily be finite and relative, and the world of space, time and relativity must be all in all to the human mind.