From this early period the inner attitudes and disciplines which were later identified and given orderly expression by Patanjali.
According to Patanjalis Yoga Sutra, the classical text on yoga, the purpose of yoga is to lead to a silence of the mind (1.2).
Vedantins interpret Yoga as return of the individual atman to the Supreme.
The Yoga with which most Westerners are familiar is Hatha Yoga, consisting of bodily exercises.
Yoga is a unique scientific discipline that leads to inner transformation and a definite psychological state of conscious enlightenment.