John Bartlett (1820–1905). Familiar Quotations, 10th ed. 1919.
6682 Charles Robert Darwin 1809-1882 John Bartlett
| NUMBER: | 6682 |
| AUTHOR: | Charles Robert Darwin (1809–1882) |
| QUOTATION: | I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection. |
| ATTRIBUTION: | The Origin of Species. Chap. iii. |