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

Experiment is the only means of knowledge at our disposal. Everything else is poetry, imagination.

There is no matter as such—mind is the matrix of all matter.

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.

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.

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

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.