"I have always been of the opinion, that the best way to understand the nature of things, is to examine them by experiments."

"I value not so much the multitude of experiments, as the exactness and fruitfulness of them."

"It is a shameful thing for a Christian to be ignorant of the works of nature."

"The world is a great machine, and man is a curious observer of its workings."

"The more I study nature, the more I am amazed at the wisdom and power of God."