| James Wood, comp. Dictionary of Quotations. 1899. | | | | Kant |
| | | Act always so that the immediate motive of thy will may become a universal rule for all intelligent beings. | 1 |
| Es giebt nur eine Religion, aber es kann vielerlei Arten der Glaubens geben—There is only one religion, but there may be divers forms of belief. | 2 |
| If a man makes himself a worm, he must not complain when trodden on. | 3 |
| Moral culture must begin with a change (Umwandlung) in the way of thinking, and with the founding of a character. | 4 |
| Nichts ist göttlich, als was vernünftig ist—Nothing is divine but what is agreeable to reason. | 5 |
| Sincerity is the indispensable ground of all conscientiousness, and by consequence of all heartfelt religion. | 6 |
| There is nothing divine but what is rational. | 7 |
| There is only one true religion, but there may be many forms of belief. | 8 |
| Two things strike me dumb: the infinite starry heavens, and the sense of right and wrong in man. | 9 | | |
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