Opsimath

Good word:

opsimath
n.

One who learns late in life.

Good sound. Good meaning. Good thing to be. Learned—not particularly early in life—from this very good book. Stephen Fry, in addition to being one of the funnier people alive, is damn smart, a damn good writer, and damn good at explaining things (qualities not typically associated with people who make careers walking around inside the little glowing tele-box).