My friend Karl Fogel brought me a beautiful hand carved marble chop back from China.
Here's what the Chinese characters are/mean (according to Karl, that is. I don't know Chinese from shorthand, and they may very well say "This guy is a kneebiter", but I trust Karl. Maybe that was my first mistake...):
Master, as in one who has mastered something.
To climb or clamber. ambition
Thriving, vigorous, exuberant