God could cause us considerable embarrassment by revealing all the secrets of nature to us: we should not know what to do for sheer apathy and boredom.

Unlimited activity, of whatever kind, must end in bankruptcy.

No one has ever learned fully to know themselves.

Sameness leaves us in peace but it is contradiction that makes us productive.

It is the color closest to light. In its utmost purity it always implies the nature of brightness and has a cheerful, serene, gently stimulating character. Hence, experience teaches us that yellow makes a thoroughly warm and comforting impression.

Freedom consists not in refusing to recognize anything above us, but in respecting something which is above us; for by respecting it, we raise ourselves to it, and, by our very acknowledgment, prove that we bear within ourselves what is higher, and are worthy to be on a level with it.

I have always paid attention to the merits of my enemies, and found it an advantage.