 Thus Spoke Zarathustra
| 1883 | 356 pages? duration |
 Phenomenology of Spirit
| 1973 | 621 pages? duration |
 Philosophical investigations
| 1953 | 266 pages? duration |
 Ethics
| 1677 | ? pages? duration |
 A History of Western Philosophy
| 1945 | 895 pages? duration |
 Discourse on Method and Meditations on First Philosophy
| 1637 | 136 pages? duration |
 Critique of Pure Reason
| 1781 | 792 pages? duration |