It is impossible to imitate Voltaire without being Voltaire.

Great advantage is drawn from knowledge of your adversary, and when you know the measure of his intelligence and character, you can use it to play on his weakness.

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.

It is impossible to imitate Voltaire without being Voltaire.

No government can exist without taxation. The money must necessarily be levied on the people; and the grand art consists of levying so as not to oppress.

Every man must get to Heaven his own way.

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