An honest man nearly always thinks justly.

I don't know what is truth,but I can tell you how to find it!

Consolation indiscreetly pressed upon us, when we are suffering undue affliction, only serves to increase our pain, and to render our grief more poignant.

It is to law alone that men owe justice and liberty. It is this salutary organ, of the will of all which establishes in civil rights the natural equality between men. It is this celestial voice which dictates to each citizen the precepts of public reason, and teaches him to act according to the rules of his own judgment and not to behave inconsistently with himself. It is with this voice alone that political leaders should speak when. they command.

The mechanism she employs is much more powerful than ours, for all her levers move the human heart.

Chemistry... is like the maid occupied with daily civilisation; she is busy with fertilisers, medicines, glass, insecticides ... for she dispenses the recipes.

To renounce liberty is to renounce being a man, to surrender the rights of humanity and even its duties.