“Do you think that God will punish them for not practicing a religion which he did not reveal to them?”

When God endowed human beings with brains, He did not intend to guarantee them.

Friendship is a contract in which we render small services in expectation of big ones.

It is not the young people that degenerate; they are not spoiled till those of mature age are already sunk into corruption.

The less men think, the more they talk.

Political liberty in a citizen is that tranquillity of spirit which comes from the opinion each one has of his security, and in order for him to have this liberty the government must be such that one citizen cannot fear another citizen.

A fondness for reading changes the inevitable dull hours of our life into exquisite hours of delight.

The spirit of commerce… renders every man willing to live on his own property…& prevents the growth of luxury.

Society is the union of men and not the men themselves.

What unhappy beings men are! They constantly waver between false hopes and silly fears, and instead of relying on reason they create monsters to frighten themselves with, and phantoms which lead them astray.

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.

In the state of nature… all men are born equal, but they cannot continue in this equality. Society makes them lose it, and they recover it only by the protection of the law.

Men should be bewailed at their birth, and not at their death.

An author is a fool who, not content with boring those he lives with, insists on boring future generations.

Europe is a state with several provinces

One more organ or one less in our body would give us a different intelligence. In fact, all the established laws as to why our body is a certain way would be different if our body were not that way.

As men are affected in all ages by the same passions, the occasions which bring about great changes are different, but the causes are always the same.