Further Reading

Fundamental works by Rudolf Steiner:

Knowledge of the Higher Worlds (also published as: How to Know Higher Worlds)

Occult Science (also published as: An Outline of Esoteric Science)

Theosophy

The Philosophy of Freedom (also published as: Intuitive Thinking as a Spiritual Path)

Other works:

Anthroposophical Leading Thoughts

Autobiography

Education of the Child

Study of Man

Other Authors:

J. W. Von Goethe, The Green Snake and the Beautiful Lily, A Fairy Tale

Hermann Poppelbaum: Man and Animal, Their Essential Difference

Available from Rudolf Steiner Press (UK) or SteinerBooks (USA).