Historic statement of the meaning of Yogananda's teachings. The booklet itself is important for those who are interested in the history of the movement that culminated in the formation of the organization "Self-Realization Fellowship." Yogananda's remarks show that he wasn't worried about 'preserving the purity' of his teachings. He obviously believed, and taught, that much more truth is waiting to be discovered by the adept practitioners of meditation than can ever be contained in writings, whether the Yogoda written teachings or the Self-Realization Fellowship Lessons (as the Yogoda correspondence course is now called). Yogananda's teachings are an invitation to use the spiritual key to meditation that he had been sent to give. It's up to each student to turn, through spiritual and meditative practice, that key in the lock of spiritual effort. "Do not accept blindly what I say; practice and prove for yourselves from your own experience."