This booklet comprises of class talks given by Swami Vivekananda to an intimate audience in America. Here the subject of practical spirituality in the form of Raja Yoga is presented in a very lucid and succinct form, offering many valuable hints and directions for spiritual practice. The book is thus designed to be a precious and authoritative guide for all serious students of practical religion.
There is only one sin -- and that sin is weakness. When I was a boy, I read Milton's Paradise Lost. The only good man I had any respect for was Satan. The only saint is the soul who never weakens, faces everything, and determines to die game.
-Swami Vivekananda