"I have always looked upon the study of nature as a kind of religious duty."

"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."

"The true philosopher must be a master of his senses."

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

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