Our labour preserves us from three great evils -- weariness, vice, and want.

Where there is friendship, there is our natural soil.

Philosopher: A lover of wisdom, which is to say, Truth.

Now, now my good man, this is no time to be making enemies." (Voltaire on his deathbed in response to a priest asking him that he renounce Satan.)

I am convinced that everything has come down to us from the banks of the Ganges, astronomy, astrology, metempsychosis, etc. It does not behoove us, who were only savages and barbarians when these Indians and Chinese peoples were civilized and learned, to dispute their antiquity.

The spirit of property doubles a man's strength.

When we cannot use the compass of mathematics or the torch of experience...it is certain we cannot take a single step forward.