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.
All who have actually attained any real religious experience never wrangle over the form in which the different religions are expressed. They know that the soul of all religions is the same and so they have no quarrel with anybody just because he or she does not speak in the same tongue.
-Swami Vivekananda