“The whole thing that makes a mathematician’s life worthwhile is that he gets the grudging admiration of three or four colleagues.”

“It is not worth my while to manufacture in three countries only; but I can find it very worthwhile to make it for the whole world.”

“Love is a wonderful thing. It makes life worthwhile. I love being in love.”

“There was this whole thing of ‘Jack's voice breaking’ about three or four months ago, and I think I sort of laughed at the whole thing, 'cause they sort of made out like I couldn't sing anymore, and my whole life was over, which it wasn't.”

“Freedom makes life not easy/ But noble and worthwhile!”

“It really is worth the trouble to invent a new symbol if we can thus remove not a few logical difficulties and ensure the rigour of the proofs. But many mathematicians seem to have so little feeling for logical purity and accuracy that they will use a word to mean three or four different things, sooner than make the frightful decision to invent a new word.”

“Ah, that we lack the courage of our romantic convictions; and thereby miss the wine of life, forgoing the very thing that makes living worthwhile.”

“Let me make it clear: You don’t want his disapproval. He never forgets these things. If he needs to, he hires other people to carry his grudges for him.”

“We can forgive a man for making a useful thing as long as he does not admire it. The only excuse for making a useless thing is that one admires it intensely.

All art is quite useless.”

“If you wish to achieve worthwhile things in your personal and career life, you must become a worthwhile person in your own self-development.”