Nothing can be taught to the mind which is not already concealed as potential knowledge in the unfolding soul of the creature. So also all perfection of which the outer man is capable, is only a realising of the eternal perfection of the Spirit within him. We know the Divine and become the Divine, because we are That already in our secret nature. All teaching is a revealing, all becoming is an unfolding. Self-attainment is the secret; self-knowledge and an increasing consciousness are the means and the process.
The usual agency of this revealing is the Word, the thing heard (śruta). The Word may come to us from within; it may come to us from without. But in either case, it is only an agency for setting the hidden knowledge to work. The word within may be the utterance of the inmost soul in us which is always open to the Divine; or it may be the word of the secret and universal Teacher who is seated in the hearts of all. There are rare cases in which none other is needed, for all the rest of the Yoga is an unfolding under that constant touch and guidance; the lotus of the knowledge discloses itself from within by the power of irradiating effulgence which proceeds from the Dweller in the lotus of the heart. Great indeed, but few are those to whom self-knowledge from within is thus sufficient and who do not need to pass under the dominant influence of a written book or a living teacher. (The Synthesis of Yoga, Page: 54)
