| 1. | Birth and Death in the Life of the Soul | March 28, 1904 |
| 2. | Birth and Death in the Life of the Soul, A Theosophical Worldview | May 16, 1904 |
| 3. | Birth and Death in the Life of the Soul | January 7, 1905 |
| 4. | Man And His Entities | April 25, 27 1905 |
| 5. | Repeated Earth Lives As The Key To The Human Riddle | December 9, 1905 |
| 6. | The Three Worlds | February 3, 1906 |
| 7. | How Do We Understand Illness and Death? | January 21, 1907 |
| 8. | The Mystery of Death and the Riddle of Life | February 1, 1908 |
| 9. | Life after Death, a Fact of Reality | March 14, 1909 |
| 10. | The Secret of Death as The Key to the Riddle of Life | December 17, 1909 |
| 11. | The Secret of Death as The Key to the Riddle of Life | January 2, 1910 |
| 12. | Knowledge and Immortality | February 5, 1910 |
| 13. | Special Questions Concerning Reincarnation and Destiny | February 24, 1910 |
| 14. | The Human Being's Journey Through the World of the Senses, Soul and Spirit | February 25, 1910 |
| 15. | The Essence of Sleep and Death | February 26, 1910 |
| 16. | Illumination of Nietzsche and Theosophy | February 28, 1905 |
| 17. | Haeckel, the Riddles of the World and Theosophy | November 13, 1905 |
| 18. | Haeckel's World Riddle and Theosophy | March 21, 1906 |
| 19. | German Theosophists of the Nineteenth Century | April 11, 1906 |
| 20. | Paracelsus | October 12, 1906 |
| 21. | Richard Wagner and Mysticism | December 4, 1906 |
| 22. | Richard Wagner and the Spirit World | February 25, 1908 |
| 23. | Goethe's Esoteric Answer to the Riddle of the World | March 30, 1908 |
| 24. | The Essence of Sleep and Death | April 6, 1908 |
| 25. | Tolstoy And Carnegie | November 6, 1908 |
| 26. | On Fichte, Schelling and Hegel – The Value of Philosophy for Theosophy | June 17, 1910 |
| 27. | Overcoming Materialism from a Contemporary Point of View | September 13, 1905 |
| 28. | The Origin and Nature of Man | October 14, 1905 |
| 29. | On the Future of Man | November 18, 1905 |
| 30. | The Creation of the World and the Descent of Man | December 1, 2 1905 |
| 31. | The Evolution of the Planets | April 5, 1906 |
| 32. | The Origin of Man | October 31, 1907 |
| 33. | Natural Science at a Crossroads | December 1, 1907 |
| 34. | The Beginning and the End of the Earth | December 16, 1907 |
| 35. | Science at a Crossroads | February 17, 1908 |
| 36. | Natural Science at a Crossroads | January 17, 1909 |
| 37. | What can the Modern Human find in Theosophy? | November 7, 1904 |
| 38. | The Ideals of Humanity and the Ideals of the Initiates | January 16, 1906 |
| 39. | Theosophy and the Visual Arts | January 17, 1906 |
| 40. | The Inner Development of Man | February 12, 14 1906 |
| 41. | How to Understand Illness and Death | October 29, 30, November 1 1906 |
| 42. | Blood is a Very Special Fluid | November 30, 1905 |
| 43. | Blood is a Very Special Fluid | January 11, 1907 |
| 44. | Blood is a Very Special Fluid | January 22, 1907 |
| 45. | The Riddle of Existence | February 5, 1907 |
| 46. | Clairvoyance and Fantasy | November 7, 1908 |
| 47. | The Essence of Man as the Key to the Secrets of the World | November 24, 1908 |
| 48. | Where and How Can one Find the Spirit? | December 1, 1908 |
| 49. | The Practical Training of Thinking | February 13, 1909 |
| 50. | Clairvoyance: the Subconscious and the Superconscious | March 8, 1909 |
| 51. | The Western Ways of Initiation | June 2, 1909 |
| 52. | The Wrath of Zeus. The Chained Prometheus | October 21, 1909 |
| 53. | The Human Character | October 29, 1909 |
| 54. | Asceticism and Illness | December 13, 1909 |
| 55. | The Mission of Devotion | March 12, 1910 |
