"The true end of natural philosophy is the glory of God and the benefit of mankind."

"I have always endeavored to be a faithful interpreter of nature, and not a presumptuous dictator."

"I have always taken a delight in observing the various phenomena of nature, and in trying to find out their causes."

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

"I have always been of the opinion, that the best way to convince men of their errors, is to lay before them a clear and distinct view of the truth."