Series 2, Chapter 8 pg 358, Para 1: arrive at it by their own motion and can only get at imperfect mental reflections that reveal less than they conceal and disfigure. This is a secret wisdom which one must hear from the seers who have seen the face of this Truth, have heard its word and have become one with it in self and spirit. “All the Rishis say this of thee and the divine seer Narada, Asita, Devala, Vyasa.” Or else one must receive it from within by revelation and inspiration from the inner Godhead who lifts in us the blazing lamp of knowledge. Svayancaiva bravisi me, “and thou thyself sayest it to me.” Once revealed, it has to be accepted by the assent of the mind, the consent of the will and the heart's delight and submission, the three elements of the complete mental faith, sraddha. It is so that Arjuna has accepted it; “all this that thou sayest, my mind holds for the truth.” But still there will remain the need of that deeper possession in the very self of our being out from its most intimate psychic centre, the soul's demand for that inexpressible permanent spiritual realisation of which the mental is only a preliminary or a shadow and without which there cannot be a complete union with the Eternal.