GA 66
| No. | Lecture Title | Book Title | Date | City | 1. | The Human Soul and the Human Body | The Human Soul and the Human Body | 15 Feb 1917 | Berlin | 2. | Riddles of the Soul and Riddles of the Universe | The Human Soul and the Human Body | 17 Feb 1917 | Berlin | 3. | Soul Immortality, Destiny Forces, and the Human Life Cycle | Mind and Matter — Life and Death | 1 Mar 1917 | Berlin | 4. | The Human Soul and Body in the Light of Knowledge of Nature and Spirit | Mind and Matter — Life and Death | 15 Mar 1917 | Berlin | 5. | Soul Enigma and World Enigma: Research and Contemplation in German Intellectual Life | Mind and Matter — Life and Death | 17 Mar 1917 | Berlin | 6. | Life, Death and the Immortal Soul in the Universe | Mind and Matter — Life and Death | 22 Mar 1917 | Berlin | 7. | The Beyond of the Senses and the Beyond of the Soul | Mind and Matter — Life and Death | 31 Mar 1917 | Berlin |
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