 Proposed Roads to Freedom: Socialism, Anarchism and Syndicalism
| 1918 | 108 pages? duration |
 The Problems of Philosophy
| 1900 | 107 pages? duration |
 Groundwork of the Metaphysics of Morals
| 1785 | 82 pages? duration |
 Why I Am Not a Christian and Other Essays on Religion and Related Subjects
| 1957 | 266 pages? duration |
 Critique of Practical Reason
| 1997 | 186 pages? duration |
 Prolegomena to any future metaphysics that will be able to come forward as science
| 270 pages? duration | |
 Tractatus Logico-philosophicus
| 1921 | 143 pages? duration |
 Introduction to Mathematical Philosophy | 1918 | 238 pages? duration |
 Conjectures and Refutations
| 1963 | 608 pages? duration |
 The Metaphysics of Morals
| 1797 | 284 pages? duration |
 The Principles of Mathematics
| 1903 | 576 pages? duration |
 Mysticism and Logic
| 1910 | 192 pages? duration |
 Religion and Science
| 1935 | 272 pages? duration |
 Political Ideals
| 1917 | 74 pages? duration |
 Objective Knowledge: An Evolutionary Approach
| 1972 | ? pages? duration |
 All Life is Problem Solving
| 1994 | ? pages? duration |
 Quantum Theory and the Schism in Physics: From The Postscript to the Logic of Scientific Discovery
| 1980 | 230 pages? duration |