The practice of yogic exercises, through a guru (who is identified as the Lord), has the power to realize the ultimate self and Brahman, and thus detach oneself from the life cycle, Veda and sciences and so forth. The realization of Paramatman is said to be achieved only via a guru or the Vedas. The nature of Paramatman is explained further and identified with the deities Brahma, Vishnu, Shiva and Purusha.