"There are two kinds of truths: those of reasoning and those of fact."

"The pleasure we obtain from music comes from counting, but counting unconsciously. Music is nothing but unconscious arithmetic."

"If geometry were as much opposed to our passions and present interests as is ethics, we should contest it and violate it but little less, notwithstanding all the demonstrations of Euclid and Archimede…"

"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…"

"I maintain that the universe is a kind of clock, wound up by God, and that it runs without His further interference."