I hold that the mark of a genuine idea is that its possibility can be proved, either a priori by conceiving its cause or reason, or a posteriori when experience teaches us that it is in fact in nature.
| Philip Emeagwali Quotes |
| Peter Akinola Quotes |
| Sade Adu Quotes |
| Goodluck Jonathan Quotes |
| Chinua Achebe Quotes |
| Buchi Emecheta Quotes |
| Ibrahim Babangida Quotes |
| Ben Affleck, Actor (1972) |
| Anthony Anderson, Actor (1970) |
| Ethel Barrymore, Actress (1879) |
| Lillian Gordy Carter, Celebrity (1898) |
| Jim Dale, Musician (1935) |
| Linda Ellerbee, Journalist (1944) |
| Edna Ferber, Novelist (1885) |
| Gianfranco Ferre, Designer (1944) |
| Melinda Gates, Businesswoman (1964) |
| Florence Harding, First Lady (1860) |
| Richard Cecil, Clergyman (1810) |
| Grazia Deledda, Writer (1936) |

