_Raja Yoga_ is the way of the strongly individualized _will_. "_Knowledge is power_" is the hope which encourages the disciple on the path of Raja Yoga. He seeks to master the personal self by meditation, by concentration of will; by self discipline and sacrifice. When the ego gains complete control over the mental faculties, so that the mind may be directed as the individual will suggests, the student has mastered the path of Raja Yoga. If his mastery is complete, he finds himself regarding his body as the instrument of the Self, and the body and its functions are under the guidance of the ego; the mind is the lever with which this Self raises the consciousness from the lower to the higher vibrations. The student who has mastered Raja Yoga can induce the trance state; control his dreams as well as his waking thoughts; he may learn to practice magic in its higher aspects, but unless he is extremely careful this power will tempt him to use his knowledge for selfish or unworthy purposes. Let the student of Raja Yoga bear in mind the one great and high purpose of his efforts, which should be: the realization of his spiritual nature, and the development of his individual self, so that it finally merges into the spiritual Self, thus gaining immortality "in the flesh." Does this "flesh" mean the physical body? Not necessarily, because this that we see and name "the physical body" is not the real body, any more than the clothing that covers it, is the person, although frequently we recognize acquaintances _by their clothing_. Immortality in the flesh means cessation from further incarnations, the last and present personality including all others in consciousness, until we can say, "I, manifesting in the physical, as so-and-so, am now and forever immortal, remembering other manifestations which were not sufficiently complete, but which added to the sum of my consciousness until now I _know myself a deathless being_." To those who seek the path of Raja Yoga, we recommend meditation upon Patanjali's Yoga Sutras, of which there are several translations, differing slightly as to interpretation. We have selected some of the most important, from the translations by Johnston. They are designed to make clear the difference between the self of personality, and the Self, or _atman_ which manifests in personality: "The personal self seeks to feast upon life, through a failure to perceive the distinction between the personal self and the spiritual man. All personal experience really exists for the sake of another: namely, the spiritual man. By perfectly concentrated meditation on experience for the sake of the Self, comes a knowledge of the spiritual man."