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.
We must have friendship for all; we must be merciful toward those that are in misery; when people are happy, we ought to be happy; and to the wicked we must be indifferent. These attitudes will make the mind peaceful.
-Swami Vivekananda