1910. How to attain knowledge of the higher worlds. This volume is of special value because within is no advice or any statement made which is not based on the personal experience of the author, who is both a mystic and an occultist. Contents: personality of Rudolf Steiner and his development by Edouard Schure; superphysical world and its gnosis; how to attain knowledge of the higher worlds; path of discipleship; probation; enlightenment; initiation; higher education of the soul; conditions of discipleship; and a list of occult and kindred books.