- Cohen, Carl, 1931-3
- Gandhi, Mahatma, 1869-19483
- Darwin, Charles, 1809-18822
- Descartes, Rene, 1596-16502
- Rawls, John, 1921-20022
- Regan, Tom2
- American Medical Association1
- American Society for the Prevention of Cruelty to Animals1
- Kant, Immanuel, 1724-18041
- Le Guin, Ursula K., 1929-20181
- Tolstoy, Alexandra, 1884-19791
- United States. Department of Agriculture1