It is never possible to predict a physical occurrence with unlimited precision.

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.

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.

It is never possible to predict a physical occurrence with unlimited precision.

An experiment is a question which science poses to Nature and a measurement is the recording of Nature's answer.

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 truth always has to conend with many difficulties. If it were not so, it would have been discovered much sooner.