Voltaire

When he who hears does not know what he who speaks means, and when he who speaks does not know what he himself means, that is philosophy.

Love is a canvas furnished by Nature and embroidered by imagination.

Men who are occupied in the restoration of health to other men, by the joint exertion of skill and humanity, are above all the great of the earth. They even partake of divinity, since to preserve and renew is almost as noble as to create.

To announce truths is an infallible receipt for being persecuted.

God is a circle whose center is everywhere and circumference nowhere.

It is dangerous to be right when the government is wrong.

If God did not exist, it would be necessary to invent Him.

God is not on the side of the big battalions, but on the side of those who shoot best.

I disapprove of what you say, but I will defend to the death your right to say it.

The pursuit of what is true and the practice of what is good are the two most important objects of philosophy.