"I cannot but be astonished that Sarsi should persist in trying to prove by means of witnesses something that I may see for myself at any time by means of experiment. Witnesses are examined in doubtful…"

"The deeper I go into the sciences, the more I am convinced that the world is the work of an all-wise Creator."

"The universe is an immense, eternal, and infinite work, which can be understood only by the one who created it."

"I do not think it is necessary to believe that the same God who gave us our senses, our reason, and our intellect, also intended us to forego their use."

"I know that I am mortal, and that my life will pass away like a shadow; but I hope that my discoveries will live on."