“A swami may conceivably follow only the path of dry reasoning, of cold renunciation; but a yogi engages himself in a definite, step-by-step procedure by which the body and mind are disciplined and the soul gradually liberated. Taking nothing for granted on emotional grounds or by faith, a yogi practices a thoroughly tested series of exercises that were first mapped out by the ancient rishis. In every age of India, yoga has produced men who became truly free, true Yogi-Christs.”