Christianity is an old metaphysical fiction, stuffed with fables, contradictions and absurdities: it was spawned in the fevered imagination of the Orientals, and then spread to our Europe, where some fanatics espoused it, where some intriguers pretended to be convinced by it and where some imbeciles actually believed it.

If I wished to punish a province, I would have it governed by philosophers.

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.

Everybody is using coffee. If possible, this must be prevented. My people must drink beer.

A man, who can, in cold blood, hunt and torture a poor, innocent animal, cannot feel much compassion for the distress of his own species.

Every man must get to Heaven his own way.

You will certainly grant me that neither antiquity nor whatever nation has devised a more repulsive and blasphemous absurdity than that of eating your God. This is the most disgusting dogma of Christian religion, the greatest insult to the Highest Being, the climax of madness and insanity.