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

He who enters a university walks on hallowed ground.

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

I venture to define science as a series of interconnected concepts and conceptual schemes arising from experiment and observation and fruitful of further experiments and observations. The test of a scientific theory is, I suggest, its fruitfulness.

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

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

The stumbling way in which even the ablest of the scientists in every generation have had to fight through thickets of erroneous observations, misleading generalizations, inadequate formulation, and unconscious prejudice is rarely appreciated by those who obtain their scientific knowledge from textbooks.