Words are like eyeglasses they blur everything that they do not make clear.

Genius begins great works; labor alone finishes them.

What can one possibly introduce into a mind that is already full, and full of itself?

When my friends lack an eye, I look at them in profile.

God multiplies intelligence, which communicates itself, like fire, ad infinitum. Light a thousand torches at one touch, the flame remains always the same.

The last word should be the last word. It is like a finishing touch given to color; there is nothing more to add. But what precaution is needed in order not to put the last word first.

There are those to whom one must advise madness.