"It is unworthy of excellent men to lose hours like slaves in the labour of calculation which could safely be relegated to anyone else if machines were used."

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

"Certainly the condition of our affairs [in Europe], slipping as we are into ever greater corruption, seems to be such that we need missionaries from the Chinese who might teach us the use and practice…"

"The soul is the mirror of an indestructible universe."

"There is a certain destiny of everything, regulated by the foreknowledge and providence of God, who has established an infallible connection between the antecedent and the consequent."