Youth. I spend most of my days surrounded by youth, but I find my definition of what that actually means is always changing.
It used to just be these little people.
Then one day I realized my high school students began to seem pretty youthful. A couple years ago I realized I was referring to the college students as "kids."
Lately I've been really amazed at how youthful my mom is. Who knew grandmothers could be so young?
But it's still those very behaviors that some of the youngest people I know do so well that seem to keep people youthful:
always being ready to try new things, to figure stuff out
constantly solving problems and figuring out how to do things you've never done before
and of course, one of the most important qualities of youth:
always being ready to head off on a grand adventure.