It would be possible to describe everything scientifically, but it would make no sense; it would be without meaning, as if you described a Beethoven symphony as a variation of wave pressure.

The more cruel the wrong that men commit against an individual or a people, the deeper their hatred and contempt for their victim.

Truly novel inventions emerge only in one's youth. Later one becomes ever more experienced, famous-and foolish.

If I had 20 days to solve a problem, I would take 19 days to define it

But science can only be created by those who are thoroughly imbued with the aspiration toward truth and understanding. This source of feeling, however, springs from the sphere of religion. To this there also belongs the faith in the possibility that the regulations valid for the world of existence are rational, that is, comprehensible to reason. I cannot conceive of a genuine scientist without that profound faith. The situation may be expressed by an image: science without religion is lame, religion without science is blind.

To the extent math refers to reality, we are not certain to the extent we are certain, math does not refer to reality.

I shall never believe that God plays dice with the world.