After the bare requisites to living and reproducing, man wants most to leave some record of himself, a proof, perhaps, that he has really existed. He leaves his proof on wood, on stone or on the lives of other people. This deep desire exists in everyone, from the boy who writes dirty words in a public toilet to the Buddha who etches his image in the race mind. Life is so unreal. I think that we seriously doubt that we exist and go about trying to prove that we do.
John SteinbeckDo you think it's funny to be so serious when I'm not even out of high school?' she asked. 'I don't see how it could be any other way,' said Lee. 'Laughter comes later, like wisdom teeth, and laughter at yourself comes last of all in a mad race with death, and sometimes it isn't in time.
John Steinbeck