There slumber in every human being faculties by means of which he can acquire for himself a knowledge of higher worlds. Mystics, Gnostics, and Theosophists all speak of a world of soul and spirit which for them is just as real as the world we see with our physical eyes and touch with our physical hands.

The anthroposophy of Rudolf Steiner is not a theoretical system, but the results of research based on direct observation. As Steiner's research was so vast and conducted over such a long period of time, no single book can be said to contain the whole of his spiritual teaching. However, of all his books on occult science, also known as esoteric science, come closest. Steiner even referred to it as 'an epitome of anthroposophical spiritual science'.

Rudolf Steiner uses the history of Atlantis and Lemuria to discuss the esoteric evolution of man. He covers in more detail what is suggested in An Outline of Occult Science. There was a time when a continent called Atlantis still lay between Europe and America. This portion of the worlds surface was at one time land; this land now forms the bottom of the Atlantic Ocean. Plato alluded to the last remaining remnant of that lost continent when he spoke of the Island of Poseidon.

Originally published in 1894, Rudolf Steiner's Die Philosophie der Freiheit was considered by Steiner to be his most enduring work above all others. This is the first English translation, which was done in 1916. Two years later, in 1918, he revised it to be more in line with The Theosophical Society's philosophy. In many ways, this edition is truer to his spirit then all other translations, including some of the modern ones.  

Rudolf Joseph Lorenz Steiner (25 or 27 February 1861 - 30 March 1925) was an Austrian philosopher, social thinker, architect, and esotericist. He gained initial recognition as a literary critic and cultural philosopher. At the beginning of the 20th century, he founded a new spiritual movement, Anthroposophy, as an esoteric philosophy growing out of European transcendentalism and with links to Theosophy.