"Physics is a science of the real world, not of the subjective impressions of the individual."

"The scientist's greatest reward is the joy of discovery."

"A scientist is happy, not in resting on his attainments but in the steady acquisition of fresh knowledge."

"The man who has had a spiritual awakening is a man of courage."

"An important scientific innovation rarely makes its way by gradually winning over and converting its opponents: it rarely happens that Saul becomes Paul. What does happen is that its opponents gradual…"