Every advance in knowledge brings us face to face with the mystery of our own being.

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

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.

We have no right to assume that any physical laws exist, or if they have existed up until now, that they will continue to exist in a similar manner in the future.

Science cannot solve the ultimate mystery of nature. And that is because, in the last analysis, we ourselves are a part of the mystery that we are trying to solve.

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.

A new scientific truth is usually not propagated in such a way that opponents become convinced and discard their previous views. No, the adversaries eventually die off, and the upcoming generation is familiarised anew with the truth.