Science advances, not by the accumulation of new facts, but by the continuous development of new concepts.

Each honest calling, each walk of life, has its own elite, its own aristocracy based on excellence.

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

Science advances, not by the accumulation of new facts, but by the continuous development of new concepts.

Some of mankind's most terrible misdeeds have been committed under the spell of certain magic words or phrases.

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

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