Compassionate people are geniuses in the art of living, more necessary to the dignity, security, and joy of humanity than the discoverers of knowledge.

Everything that is really great and inspiring is created by the individual who can labor in freedom.

In every true searcher of Nature there is a kind of religious reverence.

Only in mathematics and physics was I, through self-study, far beyond the school curriculum, and also with regard to philosophy as it was taught in the school curriculum.

So long as there are men, there will be wars.

If you can't explain what you are doing to a nine-year-old, then either you still don't understand it very well, or it's not all that worthwile in the first place.

I was just more stubborn and more passionate than most about physics.