- Aristotle3
- Bakke, Allan Paul1
- Bentham, Jeremy, 1748-18321
- Brandt, Richard B.1
- Cigman, Ruth, 1951-1
- Cohen, Carl, 1931-6
- Culture and Animals Foundation1
- Darwin, Charles, 1809-18823
- Descartes, Rene, 1596-16503
- Forten, James, 1766-18421
- Francione, Gary L. (Gary Lawrence), 1954-1
- Frey, R. G. (Raymond Gillespie)2
- Gandhi, Mahatma, 1869-19481
- Goodall, Jane, 1934-1
- Hare, R. M. (Richard Mervyn)2
- Hume, David, 1711-17762
- Kant, Immanuel, 1724-18045
- Locke, John, 1632-17041
- Mill, John Stuart, 1806-18733
- Moore, G. E. (George Edward), 1873-19581