Thus God alone is the primary Unity, or original simple substance, from which all monads, created and derived, are produced.

The past is pregnant with the present.

Virtue is the habit of acting according to wisdom.

There is nothing waste, nothing sterile, nothing dead in the universe; no chaos, no confusions, save in appearance.

Nothing is more important than to see the sources of invention which are, in my opinion more interesting than the inventions themselves.

Reality cannot be found except in One single source, because of the interconnection of all things with one another.

Taking mathematics from the beginning of the world to the time when Newton lived, what he had done was much the better half.