growing as a teacher

A blogpost I read sometime back has shown me how some people grow as teachers. Thirty years ago, a nondescript young teacher, perhaps made more diffident by an unusually unpleasant senior prof. is now acclaimed as one of the great teachers by his students--a growth that is not measured by the rise in status or increase in paycheck, but by the fact that he has made strong impact on a couple of his students (and surely many others).
A pleasure to know this.