Peter S. Beagle said this quote
“ When I was eighteen or twenty, I knew everything except what I wanted. I knew all about people, and poetry, and love, and music, and politics, and baseball, and history, and I played pretty good jazz piano. And then I went traveling, because I felt that I might have missed something and it would be a good idea to learn it before I got my master's degree. (...) And the older I grew, and the farther I traveled, the younger I grew and the less I knew. I could feel it happening to me. I could actually walk down a dirty street and feel all my wisdom slipping away from me, all the things I wrote term papers about. ”