Everyone is perfectly willing to learn from unpleasant experience - if only the damage of the first lesson could be repaired.

It is a question whether, when we break a murderer on the wheel, we do not fall into the error a child makes when it hits the chair it has bumped into.

I have remarked very clearly that I am often of one opinion when I am lying down and of another when I am standing up.

Many things about our bodies would not seem to us so filthy and obscene if we did not have the idea of nobility in our heads.

We now possess four principles of morality: 1) a philosophical: do good for its own sake, out of respect for the law; 2) a religious: do good because it is God's will, out of love of God; 3) a human: do good because it will promote your happiness, out of self-love; 4) a political: do good because it will promote the welfare of the society of which you are a part, out of love of society having regard to yourself. But is this not all one single principle, only viewed from different sides?

Those who never have time do least

Virtue by premeditation isn't worth much.