A crown is merely a hat that lets the rain in.

Christianity - An old metaphysical romance, filled with marvels, contradictions, and absurdity, born in the ardent imagination of Orientals, has spread into our Europe. Enthusiasts have purveyed it, careerists have pretended to accept it, imbeciles have believed it.

Man is made for error; it enters his mind naturally, and he discovers a few truths only with the greatest effort.

I have no fault to find with those who teach geometry. That science is the only one which has not produced sects; it is founded on analysis and on synthesis and on the calculus; it does not occupy itself with the probable truth; moreover it has the same method in every country.

I think it better to keep a profound silence with regard to the Christian fables, which are canonized by their antiquity and the credulity of absurd and insipid people.

Pleasure is the most real good in this life.

I love opposition that has convictions.