| John Bartlett (1820–1905). Familiar Quotations, 10th ed. 1919. |
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| Thomas Henry Huxley. (1825–1895) |
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| 1 | | If some great Power would agree to make me always think what is true and do what is right, on condition of being turned into a sort of clock and wound up every morning before I got out of bed, I should instantly close with the offer. |
| Materialism and Idealism. |
| 2 | | If a little knowledge is dangerous, where is a man who has so much as to be out of danger? |
| Science and Culture. |
| 3 | | Irrationally held truths may be more harmful than reasoned errors. |
| The coming Age of the Origin of Species. |
| 4 | It is the customary fate of new truths to begin as heresies
and to end as superstitions. |
| The coming Age of the Origin of Species. |
| 5 | | Logical consequences are the scarecrows of fools and the beacons of wise men. |
| Animal Automatism. |
| 6 | | Veracity is the heart of morality. |
| Universities actual and ideal. |
| 7 | | The great end of life is not knowledge but action. |
| Technical Education. |
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