Originally published in 1930, this is the authorized new translation from the original German formerly translated by the title "Gates of Knowledge". Beginning with the stages of material cognition, then moving on to the higher stages of knowledge, this book deals with using Meditation and Concentration as exercises to draw the soul from its connection to the physical senses, and looks at the spirit world. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. Hesperides Press are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork. Contents Include: Stages Sleep Imagination-The Duty of A Guide Inspiration Inspiration and Intuition