You have to study a great deal to know a little.

If the triangles made a god, they would give him three sides.

In republican governments, men are all equal; equal they are also in despotic governments: in the former, because they are everything; in the latter, because they are nothing.

We ought to be very cautious in the prosecution of magic and heresy. The attempt to put down these two crimes may be extremely perilous to liberty, and may be the origin of a number of petty acts of tyranny if the legislator be not on his guard; for as such an accusation does not bear directly on the overt acts of a citizen, but refers to the idea we entertain of his character.

Love of reading enables a man to exchange the weary hours, which come to every one, for hours of delight.

Honor is unknown in despotic states.

With truths of a certain kind, it is not enough to make them appear convincing: one must also make them felt. Of such kind are moral truths.