Behavior which appears superficially correct but is intrinsically corrupt always irritates those who see below the surface.

Every vital organization owes its birth and life to an exciting and daring idea.

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

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.

A conceptual scheme is never discarded merely because of a few stubborn facts with which it cannot be reconciled; a conceptual scheme is either modified or replaced by a better one, never abandoned with nothing left to take its place.

Whether a man lives or dies in vain can be measured only by the way he faces his own problems, by the success or failure of the inner conflict within his own soul. And of this no one may know save God.

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