"The actual world is the most perfect of all possible worlds."

"The true method of discovery is to reduce everything to numbers."

"I also take it for granted that every created thing, and consequently the created monad also, is subject to change, and indeed that this change is continual in each one."

"The monads can only be changed by God."

"There are two labyrinths of the human mind: one concerns the composition of the continuum, and the other the nature of freedom, and both spring from the same source—the infinite."