" I used to think I knew all the answers...That's why I left. I know what to do, I thought. Perhaps you have to persuade yourself you know the answers, otherwise you don't ever do anything. I thought I knew the answers when I married--or at least, I thought I was going to find them out. I thought I knew the answers when I left. Now I'm not sure. Or rather, I know the answers to different things now. Perhaps that's it: we're only capable of knowing the answers to a certain number of things at any particular time. "

― Julian Barnes , Staring at the Sun