We are astonished at thought, but sensation is equally wonderful.
The mouth obeys poorly when the heart murmurs.
Our wretched species is so made that those who walk on the well-trodden path always throw stones at those who are showing a new road.
The superfluous is the most necessary.
No opinion is worth burning your neighbor for.
Quand celui à qui l'on parle ne comprend pas et celui qui parle ne se comprend pas, c'est de la métaphysique When he to whom a person speaks does not understand, and he who speaks does not understand himself, that is metaphysics.