"Nothing is good but what is profitable."

"Observe constantly that all things take place by change, and accustom thyself to consider that the nature of the universe loves nothing so much as to change existing things and to make new things like…"

"The object of life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane."

"The true way to render ourselves happy is to love what we ought and not to hate what we ought not."

"The universal cause is a torrent. And how trivial are all things which are done in a state which is subject to change, and in what a sphere of things which are perishing!"