Each honest calling, each walk of life, has its own elite, its own aristocracy based on excellence of performance. . . . There will always be the false snobbery which tries to place one vocation above another. You will become a member of the aristocracy in the American sense only if your accomplishments and integrity earn this appellation.

Science emerges from the other progressive activities of man to the extent that new concepts arise from experiments and observations, and that the new concepts in turn lead to further experiments and observations.

Even the development of the steam engine owed but little to the advancement of science.

Behold the turtle. He makes progress only when he sticks his neck out.

Each honest calling, each walk of life, has its own elite, its own aristocracy based on excellence of performance. . . . There will always be the false snobbery which tries to place one vocation above another. You will become a member of the aristocracy in the American sense only if your accomplishments and integrity earn this appellation.

The dignity of man is vindicated as much by the thinker and poet as by the statesman and soldier.

... scientific research is compounded of ... empirical procedures, general speculative ideas, and mathematical or abstract reasoning.