"The world is not a heap of atoms, but a system of monads."

"The monads are the true atoms of nature, and, in a word, the elements of things."

"I have said that the soul is a little world where distinct ideas represent God and confused ones represent the universe."

"I do not conceive of any reality at all as without genuine unity."

"The world is not a machine. Everything in it is force, life, thought."