"Every distinct perception implies infinity."

"For I hold that it is only when we can prove everything we assert that we understand perfectly the thing under consideration."

"The universe is a machine, but a divine machine."

"This interconnection or accommodation of all created things to each other, and each to all the others, brings it about that each simple substance has relations that express all the others, and consequ…"

"Monads have no windows through which anything could enter or depart."