A man must always study, but he must not always go to school: what a contemptible thing is an old abecedarian!

A man should keep for himself a little back shop, all his own, quite unadulterated, in which he establishes his true freedom and chief place of seclusion and solitude.

The most universal quality is diversity.

The continuous work of our life is to build death.

One open way of speaking introduces another open way of speaking, and draws out discoveries, like wine and love.

Opinion is a powerful party, bold, and without measure.

Of the opinions of philosophy I most gladly embrace those that are most solid, that is to say, most human and most our own; my opinions, in conformity with my conduct, are low and humble.