What is a hacker?
A hacker is someone whose appetite for the universe is never quite satisfied. The hacker seeks to understand: himself, others, what surrounds him, the tools he uses, the things he enjoys, how things fit together. The hacker seeks to build: ideas, means, practical applications, businesses, cultural movements. Some build just one, some build them all. The hacker seeks to learn, to experiment, to solve, and to learn again.
The male pronoun above is of course used merely out of grammatical tradition. Hackers are male and female, young and old. Hackers are in Silicon Valley and in the middle of cornfields, they are in industrialized countries and in developing ones, they date back centuries before the term was coined and will exist as long as does the human condition.
I guess that turned into something of a manifesto. But that's what I believe is embodied in the spirit of the hacker.