....You should keep dental floss on you at all times; when your eyesight goes, quit driving; don't keep too many secrets, eventually they'll eat away at you. But the most valuable lesson he taught me was this: Every day we get older, and some of us get wiser, but there's no end to our evolution. We are all a mess of contradictions; some of our traits work for us, some against us. And this is what I figured out on my own: Over the course of a lifetime, people change, but not as much as you'd think. Nobody really grows up.