Sensual pleasure passes and vanishes, but the friendship between us, the mutual confidence, the delight of the heart, the enchantment of the soul, these things do not perish and can never be destroyed.

A yawn may not be polite, but at least it is an honest opinion.

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

The most amazing and effective inventions are not those which do most honour to the human genius.

Know that the secret of the arts is to correct nature.

Man can have only a certain number of teeth, hair and ideas; there comes a time when he necessarily loses his teeth, hair and ideas.

This poem will never reach its destination. On Rousseau's Ode To Posterity