Fasting, meditation, chastity of thought, word, and deed; silence for certain periods of time to enable nature herself to speak to him who comes to her for information; government of the animal passions and impulses; utter unselfishness of intention, the use of certain incense and fumigations for physiological purposes, have been published as the means since the days of Plato and lamblichus in the West, and since the far earlier times of our Indian Rishis...