| 01 | Aristotle’s virtue ethics | 55.9 |
| 02 | The Social Contract | 48.7 |
| 03 | Plato's Theory of Forms | 45.7 |
| 04 | Utilitarianism | 43.8 |
| 05 | Stoicism | 42.9 |
| 06 | Existentialism | 38.2 |
| 07 | The Dialectic (Historical Materialism) | 34.4 |
| 08 | Empiricism | 33.9 |
| 09 | Socratic questioning | 30.0 |
| 10 | Cogito Ergo Sum | 29.3 |
| 11 | The Categorical Imperative | 27.4 |
| 12 | Eudaimonia | 25.0 |
| 13 | Socrates' Self-Examination and the Unexamined Life | 21.5 |
| 14 | Rationalism | 20.9 |
| 15 | Natural law | 17.7 |
| 16 | Socratic Method | 16.9 |
| 17 | Formal logic | 15.6 |
| 18 | Kant’s autonomy and duty | 15.0 |
| 19 | pragmatism | 14.2 |
| 20 | Individual freedom and free markets | 14.1 |
| 21 | Phenomenology | 14.0 |
| 22 | Language as a structure of thought | 13.6 |
| 23 | Individualism & Natural Rights | 13.5 |
| 24 | Feminist philosophy | 13.5 |
| 25 | Postmodern skepticism | 13.3 |
| 26 | Utilitarian Ethics | 13.1 |
| 27 | greatest happiness of the greatest number | 12.8 |
| 28 | Buddhism's Four Noble Truths | 11.9 |
| 29 | The “death of God” | 7.5 |
| 30 | Taoism's wu wei | 7.5 |