When he was young, he had thought love had something to do with understanding, but with age he knew that no human being understood another. Love was the wish to understand, and presently with constant failure the wish died, and love died too perhaps or changed into this painful affection, loyalty, pity.
Graham GreenePain is easy to write. In pain we're all happily individual. But what can one write about happiness?
Graham GreeneWhat an unbearable creature he must have been in those days--and yet in those days he had been comparatively innocent. That was another mystery: it sometimes seemed to him that venial sins--impatience, an unimportant lie, pride, a neglected opportunity--cut you off from grace more completely than the worst sins of all. Then, in his innocence, he had felt no love for anyone; now in his corruption he had learnt.
Graham Greene