The true measure of a man is the degree to which he has managed to subjugate his ego.

I have to apologize to you that I am still among the living. There will be a remedy for this, however.

I never think of the future - it comes soon enough.

It would seem that men always need some idiotic fiction in the name of which they can hate one another. Once it was religion. Now it is the State.

Yes, we now have to divide up our time like that, between politics and our equations. But to me our equations are far more important, for politics are only a matter of present concern. A mathematical equation stands forever.

Work is the only thing that gives substance to life.

There is not the slightest indication that nuclear energy will ever be obtainable. It would mean that the atom would have to be shattered at will.