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.

Just like a turtle, we only make progress if we stick our neck out.

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.

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

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

Science is a dynamic undertaking directed to lowering the degree of the empiricism involved in solving problems; or, if you prefer, science is a process of fabricating a web of interconnected concepts and conceptual schemes arising from experiments and observations and fruitful of further experiments and observations.