
Nothing is so fatal to the progress of the human mind as to suppose that our views of science are ultimate; that there are no mysteries in nature; that our triumphs are complete, and that there are no new worlds to conquer.
Citado por David Knight (1998). No livro Humphry Davy: science & power. Cambridge University Press. pag. 87 https://books.google.com.br/books?id=nlNRLZzzMB4C&pg=PA87. ISBN 0521565391.