Changing a habit is hard work. But it's harder to find work that would be more fulfilling

The wicked can have only accomplices, the voluptuous have companions in debauchery, self-seekers have associates, the politic assemble the factions, the typical idler has connections, princes have courtiers. Only the virtuous have friends.

I am the best-natured creature in the world, and yet I have already killed three, and of these three two were priests.

Prejudice is an opinion without judgment.

I acknowledge that four thousand volumes of metaphysics will not teach us what our soul is.

It is dangerous to be right in matters where established men are wrong.

I also know that we must cultivate our garden. For when man was put in the Garden of Eden, he was put there ut operaretur eum, to work; which proves that man was not born for rest.