GA 90b. On The Gospel of St. John - Rudolf Steiner Archive
Lecture I - GA 155. Christ and the Human Soul - Rudolf Steiner Archive
GA 93. The Manicheans - Rudolf Steiner Archive
GA 94. Popular Occultism - Rudolf Steiner Archive
GA 97. Parsifal - Rudolf Steiner Archive
GA 108. The Ten Commandments - Rudolf Steiner Archive
Vol. 101. Occult Signs and Symbols - Rudolf Steiner Archive
Vol. 117. Deeper Secrets of Human History in the Light of the Gospel of St. Matthew (1957) - Rudolf Steiner Archive
GA 116. The Christ Impulse and the Development of the Ego-Consciousness - Rudolf Steiner Archive
GA 125. Self-knowledge in Relation to the Mystery Drama, 'The Portal of Initiation' - Rudolf Steiner Archive
GA 69a. The Errors of Spiritual Investigation - Rudolf Steiner Archive
GA10 How to Know Higher Worlds (overview) - Rudolf Steiner Archive