The Doctrine and Practice of YogaIn studying these Lessons please remember 3 points: 1. Not one useless or superfluous sentence is written. Every word is full of meaning. They are highly condensed. Think deeply over them. 2. They are meant as a practical supplement to the 'Spiritual Consciousness,' 'Soul Force' and 'Inner Forces.' Studied side by side, these lessons will yield a great deal of benefit. You are expected to think hard and long. 3. Let none expect speedy or miraculous