The Mystery of the Trinity. Man and his Relationship to the Spirtual World in the Course of Time
Das Geheimnis der Trinität. Der Mensch und sein Verhältnis zur Geistwelt im Wandel der Zeiten
Eleven lectures, Dornach 23 July to 9 August 1922, Oxford 20, 22, 27 August 1922, London 30 August 1922.
The Buried Spiritual Life of the First Four Christian Centuries. Medieval and Modern Theology / Goethe's View of the Realms of Nature. The comprehension of plant forms, animal forms and the human I / Faith struggles of the Middle Ages as the basis for the modern schools of thought. / The fully conscious human ego and the mystery of the Trinity / Afterimages, thought-images and memories / Oswald Spengler's world view. The Meaning of the Machine Life of the Present / The Method of Supersensible Research. The Nature and Training of Meditation / Adam Kadmon. The Structure of the Human Form from the Constellations and Movements of the Stars / The Mystery of Golgotha as the Meaning of the Whole Being on Earth / Rhythmic Relations between Heaven and Earth.
- Rudolf Steiner: The Mystery of the Trinity. Mission of the Spirit. 8 lectures in Dornach, Oxford, and London, July and August 1922. CW 214. Steiner Books 2016. ISBN 978-1621480952 rsarchive.org
- Rudolf Steiner: Das Geheimnis der Trinität, GA 214 (1999), ISBN 3-7274-2140-1 English: rsarchive.org German: pdf pdf(2) html mobi epub archive.org
References to the work of Rudolf Steiner follow Rudolf Steiner's Collected Works (CW or GA), Rudolf Steiner Verlag, Dornach/Switzerland, unless otherwise stated.
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Index to the Complete Works of Rudolf Steiner - Aelzina Books
A complete list by Volume Number and a full list of known English translations you may also find at Rudolf Steiner's Collected Works
Rudolf Steiner Archive - The largest online collection of Rudolf Steiner's books, lectures and articles in English (by Steiner Online Library).
Rudolf Steiner Audio - Recorded and Read by Dale Brunsvold
steinerbooks.org - Anthroposophic Press Inc. (USA)
Rudolf Steiner Handbook - Christian Karl's proven standard work for orientation in Rudolf Steiner's Collected Works for free download as PDF.