What is cool?

Cool is...

"Not dependent on achievement, or vice versa. Cool is how you get there. Cool is just doing the job; not-cool is making sure, while you’re at it, that everyone sees just how tough the job is and thus how cool you are to be doing it. Cool is self-direction, self-possession, self-sufficiency, capability, discretion, and a bit of wit. Not-cool is angst, conspicuous display, disdain, tropisms toward bright lights, crowds, and media—in short, all those adolescent traits that so many people fail to grow out of." --Robert McHenry