The pursuit of happiness is a most ridiculous phrase; if you pursue happiness you'll never find it.

Literary intellectuals at one pole -- at the other scientists. Between the two a gulf of mutual incomprehension.

Science is the refusal to believe on the basis of hope.

'I grant you that he's not two-faced,' I said. 'But what's the use of that when the one face he has got is so peculiarly unpleasant?'

I was moving among two groups . . . who had almost ceased to communicate at all, who in intellectual, moral, and psychological climate had so little in common that . . . one might have crossed the ocean.