I don't teach you.

That's right, I don't teach you, at least not much. Instead, I set up situations you can learn from, such as homework assignments, class exercises, and projects. Then you teach yourself, under my guidance. The old idea of a professor lecturing while students write notes has been shown to be a lousy way to educate people. It's the "sage on a stage" model. As someone said, "from ny notes to your notes without going through the brain of either of us." Oh, sure, I do lecture, too, but only because I know, sadly, many students in the class will not have read the text (and may never), and there are plenty of things that need explaining in any subject.