GA 55
| Date | Title | City |
|---|---|---|
| 11 Oct 1906 | Knowledge of the Supersensible and Its Vital Importance in the Present Times | Berlin |
| 25 Oct 1906 | Blood is a Very Special Fluid | Berlin |
| 08 Nov 1906 | The Origin of Suffering | Berlin |
| 22 Nov 1906 | The Origin of Evil | Berlin |
| 01 Dec 1906 | Education of the Child from the Standpoint of Spiritual Science | Cologne |
| 13 Dec 1906 | How can We Understand Illness and Death? | Berlin |
| 24 Jan 1907 | The School Question from the Standpoint of Spiritual Science | Berlin |
| 31 Jan 1907 | Insanity from the Standpoint of Spiritual Science | Berlin |
| 14 Feb 1907 | Wisdom and Health | Berlin |
| 28 Feb 1907 | The Mission of Mankind from the Spiritual Scientific Standpoint | Berlin |
| 14 Mar 1907 | Who are the Rosicrucians? | Berlin |
| 28 Mar 1907 | Richard Wagner and Mysticism | Berlin |
| 26 Apr 1907 | The Bible and Wisdom | Berlin |