The book is a collection of works by the Indian thinker, religious reformer and democratic educator Swami Vivekananda (1863–1902). His works provide a kind of encyclopedic presentation of various yogas. Believing that the only means of salvation for modern humanity is to turn to spiritual and religious experience, Swami Vivekananda promoted Indian national traditions, emphasized the primacy and spread of universal religion, put forward the ideas of “courageous Hinduism”, active service to humanity. The book is intended for those interested in philosophy and religious thought India.