With stupidity the gods themselves contend in vain.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge.

You must not lose faith in humanity. Humanity is an ocean; if a few drops of the ocean are dirty, the ocean does not become dirty.

We live in a Newtonian world of Einsteinian physics ruled by Frankenstein logic.

I was not a child prodigy, because a child prodigy is a child who knows as much when it is a child as it does when it grows up.

Philosophers say a great deal about what is absolutely necessary for science, and it is always, so far as one can see, rather naive, and probably wrong.

Yes, we have to divide up our time like that, between our 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.

The world is governed more by appearances than realities, so that it is fully as necessary to seem to know something as to know it.

The people I distrust most are those who want to improve our lives but have only one course of action.

The world is a tragedy to those who feel, but a comedy to those who think.