"I have also a paper afloat, with an electromagnetic theory of light, which, till I am convinced to the contrary, I hold to be great guns."

"The world may be utterly crazy, and life may be labour in vain; But I'd rather be silly than lazy, and would not quit life for its pain."

"The only way to avoid error is to have no ideas at all."

"I have been thinking about the nature of things, and I have come to the conclusion that there is a good deal of it."

"I think men of science as well as other men need to learn from Christ, and I think Christians whose minds are scientific are bound to study science that their view of the glory of God may be as extens…"