All the interests of my reason, speculative as well as practical, combine in the three following questions: 1. What can I know? 2. What ought I to do? 3. What may I hope?

Feminine traits are called weaknesses. People joke about them; fools ridicule them; but reasonable persons see very well that those traits are just the tools for the management of men, and for the use of men for female designs.

Nothing is divine but what is agreeable to reason.

Enlightenment is the liberation of man from his self-caused state of minority... Supere aude! Dare to use your own understanding!is thus the motto of the Enlightenment.

Beneficence is a duty.

It is difficult for the isolated individual to work himself out of the immaturity which has become almost natural for him.

Rules for Happiness: something to do, someone to love, something to hope for.