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

"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 scientist's greatest reward is the joy of discovery."

"A scientist is a man who tries to understand the world by experiment, and a philosopher is a man who tries to understand the world by thought."

"A scientist is happy, not in resting on his attainments but in the steady acquisition of fresh knowledge."