Gottfried Wilhelm Leibniz — "I do not conceive of any reality at all as without genuine unity."

"To love is to be delighted by the happiness of another."

"It is God who is the ultimate reason things, and the Knowledge of God is no less the beginning of science than his essence and will are the beginning of things."

"The universe, if it were not composed of monads, would be a mere aggregate, not a substance."

"The more perfect a substance is, the more it mirrors the universe."

"I hold that the mark of a genuine idea is that its possibility can be proved, either a priori by conceiving its cause or reason, or a posteriori when experience teaches us that it is actual in nature."