Religion and natural science are fighting a joint battle in an incessant, never-relaxing crusade against skepticism and dogmatism, against disbelief and against superstition, and the rallying cry in this crusade has always been, and will always be, 'On to God.'

Scientific work will never stop, and it would be terrible if it did. If there were no more problems, you would put your hands in your pockets and your head on a pillow and would work no more. In science rest is stagnation, rest is death.

An important scientific innovation rarely makes its way by gradually winning over and converting its opponents: What does happen is that the opponents gradually die out.

It is not the possession of truth, but the success which attends the seeking after it, that enriches the seeker and brings happiness to him.

Science advances one funeral at a time.

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

Science progresses not by convincing the adherents of old theories that they are wrong, but by allowing enough time to pass so that a new generation can arise unencumbered by the old errors.