ABSTRACT
The Upaniṣads (especially Katha, Nada Vindu, Hansa, etc.) lay down a discipline for psychic culture. Psychism requires purification before it can be a fruitful source of knowledge. The psychic culture is Yoga. Yoga essentially encourages fine forms of concentration. Its purpose is to reveal the secrets lying deep in our psychic being. The finest method of Yoga is Samadhi. Samadhi presupposes the psychical and vital fitness and fineness, and Yoga, therefore, in its complete course teaches the art of posture and breathing.
