"The changing of bodies into light, and light into bodies, is very conformable to the course of nature, which seems delighted with transmutations."

"My powers are ordinary. Only my application brings me success."

"If I have done the public any service, it is due to my patient thought."

"The light which comes from the sun, and from all fire, consists of all the primary colours mixed together."

"It seems probable to me, that God in the beginning formed matter in solid, massy, hard, impenetrable, moveable particles..."