GA 276
| Date | Title | City |
|---|---|---|
| 18 May 1923 | The Genius of Language I | Olten |
| 20 May 1923 | The Genius of Language II | Olten |
| 27 May 1923 | The Genius of Language III | Dornach |
| 01 Jun 1923 | The Genius of Language IV | Dornach |
| 02 Jun 1923 | The Genius of Language V | Dornach |
| 03 Jun 1923 | The Genius of Language VI | Dornach |
| 08 Jun 1923 | Anthroposophy and Art. Anthroposophy and Poetry I | Dornach |
| 09 Jun 1923 | Anthroposophy and Art. Anthroposophy and Poetry II | Dornach |