Esteem never makes ingrates.

Those who are incapable of committing great crimes do not readily suspect them in others.

Jealousy is in a manner just and reasonable, as it tends to preserve a good which belongs, or which we believe belongs to us, on the other hand envy is a fury which cannot endure the happiness of others.

Extreme boredom provides its own antidote.

Nothing is impossible; there are ways that lead to everything, and if we had sufficient will we should always have sufficient means. It is often merely for an excuse that we say things are impossible.

We may sooner be brought to love them that hate us, than them that love us more than we would have them do.

A certain harmony should be kept between actions and ideas if we want to fully develop the effects they can produce.