Ethical progress is the only cure for the damage done by scientific progress.

It is better to be wrong than to be vague.

When the great innovation appears, it will almost certainly be in muddled, incomplete and confusing form. ... For any speculation which does not at first glance look crazy, there is no hope.

Mathematics is really an art, not a science.

The public knows that human beings are fallible. Only people blinded by ideology fall into the trap of believing in their own infallibility.

I belonged to a small minority of boys who were lacking in physical strength and athletic prowess. ... We found our refuge in science. ... We learned that science is a revenge of victims against oppressors, that science is a territory of freedom and friendship in the midst of tyranny and hatred.

The only way to improve the chances for finding winners is to keep all the choices open and try them all.