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

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

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

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

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.

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.

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