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.
By doing well the duty which is nearest to us, the duty which is in our hands now, we make ourselves stronger; and improving our strength in this manner step by step, we may reach a state in which it shall be our privilege to do the most coveted and honored duties in life and in society.
-Swami Vivekananda