The main object of this book is to discuss the science of Yoga in as simple and rational a manner as possible, and also to debunk some of the nonsense that continues to be said and believed on the subject. A must for all those are eager to clarify their conception about Yoga.
Who will bring light to the poor? Who will travel from door to door bringing education to them? Let these people be your God -- think of them, work for them, pray for them incessantly. The Lord will show you the way.
-Swami Vivekananda