In 1882, at the age of 21, Rudolf Steiner's life was changed forever by a seemingly chance meeting on a train. Traveling between Vienna and his home town of Pottschach, Steiner fell into conversation with Felix Koguzki, a lowly herb-gatherer who claimed to have personal and direct knowledge of higher worlds of spiritual attainment. Koguzki arranged for the young man to meet a mysterious individual, someone Steiner refers to only as a 'Master', who seems to have guided him successfully towards spiritual enlightenment. Steiner's book 'Theosophy' was published 28 years later, in 1910, and is a detailed account of this 'spiritual science', a method of attaining to the higher worlds that is replete with descriptions of esoteric realities, and what one may expect at the various milestones of human development. This is a book that will repay a slow and careful study, a treatise on the higher worlds that the reader can, with profit, return to again and again.