GA 164
| No. | Lecture Title | Book Title | Date | City | 1. | The Value of Thinking I | Not Yet Available | 17 Sep 1915 | Dornach | 2. | The Value of Thinking II | Not Yet Available | 18 Sep 1915 | Dornach | 3. | The Value of Thinking III | Not Yet Available | 19 Sep 1915 | Dornach | 4. | The Value of Thinking IV | Not Yet Available | 20 Sep 1915 | Dornach | 5. | Comments on a Pamphlet by F. von Wrangell "Science and Theosophy" I | Not Yet Available | 26 Sep 1915 | Dornach | 6. | Comments on a Pamphlet by F. von Wrangell "Science and Theosophy" II | Not Yet Available | 27 Sep 1915 | Dornach | 7. | Comments on a Pamphlet by F. von Wrangell "Science and Theosophy" III | Not Yet Available | 2 Oct 1915 | Dornach | 8. | Comments on a Pamphlet by F. von Wrangell "Science and Theosophy" IV | Not Yet Available | 3 Oct 1915 | Dornach | 9. | Comments on a Pamphlet by F. von Wrangell "Science and Theosophy" V | Not Yet Available | 4 Oct 1915 | Dornach | 10. | Comments on a Pamphlet by F. von Wrangell "Science and Theosophy" VI | Not Yet Available | 9 Oct 1915 | Dornach | 11. | Comments on a Pamphlet by F. von Wrangell "Science and Theosophy" VII | Not Yet Available | 20 Aug 1915 | Dornach |
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