The trick is growing up without growing old.

Growing old is mandatory; growing up is optional.

It's easy to grow old if you haven't grown up

I think I may have to grow up without growing old. I think we're going to have to define differently what I'm going to be. We're going to have to define my growing up differently.

You can hide things from the world, but you can never hide things from time.

... a gaggle of old ladies is glued to the window at the end of the hall like children or jailbirds. They're spidery and frail, their hair as fine as mist. Most of them are a good decade younger than me, and this astounds me. Even as your body betrays you, your mind denies it.----
There are five of them now, white headed old things huddled together and pointing crooked fingers at the glass.