"Anybody who has been seriously engaged in scientific work of any kind realizes that over the entrance to the gates of the temple of science are written the words: 'Ye must have faith.'"

"The pioneer feels nature as an enemy, or as a force to be conquered."

"Experiment is the only means of knowledge at our disposal. Everything else is poetry, imagination."

"It is not the possession of truth, but the success which attends the seeking after it, that enriches the seeker and brings happiness to him."

"The human mind is a wonderful thing. It starts working the moment you are born and never stops until you stand up to speak in public."