It is no good getting furious if you get stuck. What I do is keep thinking about the problem but work on something else. Sometimes it is years before I see the way forward. In the case of information loss and black holes, it was 29 years.
“I think people have the wrong idea of 'Moby Dick' as this somber, boring thing.”
“My father used to play with my brother and me in the yard. Mother would come out and say, 'You're tearing up the grass'; 'We're not raising grass,' Dad would reply. 'We're raising boys.'”