'That which men term a hallucination is the reflection in the mind and senses of that which is beyond our ordinary mental and sensory perceptions. Superstition arises from the mind’s wrong understanding of these reflections. There is no other hallucination.'
Vol. CWSA 29 includes letters on the Aim of Yoga, certain fundamentals of the practice of Integral Yoga such as surrender, equanimity and on the Guru in the Integral Yoga.