In mathematics, the art of asking questions is more valuable than solving problems.

A false conclusion once arrived at and widely accepted is not easily dislodged and the less it is understood the more tenaciously it is held.

To ask the right question is harder than to answer it.

Great innovation only happens when people aren't afraid to do things differently.

In Mathematics the art of proposing a question must be held of higher value than solving it.

The essence of mathematics lies precisely in its freedom.

A set is a Many that allows itself to be thought of as a One.

Don't always blindly follow guidance and step-by-step instructions; you might run into something interesting.

My beautiful proof lies all in ruins.

There is no doubt that we cannot do without variable quantities in the sense of the potential infinite. But from this very fact the necessity of the actual infinite can be demonstrated.

Every transfinite consistent multiplicity, that is, every transfinite set, must have a definite aleph as its cardinal number.

Big shots are only little shots that keep shooting. I can see your sun rise out of obscurity. Keep shooting

To write a book is to risk being shot at in public.

Alcohol make you drunk, man. It don't make you meditate, it just make you drunk. Herb is more a consciousness.

You have to remind people of their own struggles. It's a responsibility.

I would never repudiate the fact that I am an Irishman

Talk to the press and we'll bury you.

Who will ever give counsel, if the counsel be judged by the event, and if it be not found wise, shall therefore be thought wicked?

The fatigue was there, but some people understood that putting it aside was the single most important factor in succeeding.

Posterity allows to every man his true value and proper honours.

A handful of letters doesn't always make a word, love.