I have no question that students who learn,
not professors who perform, is what teaching is all about: students who learn are the finest fruit of teachers who teach. …[T]eachers possess the power to create conditions that can help students learn a great deal—or keep them from learning much at all. Teaching is the intentional act of creating those conditions, and good teaching requires that we understand the inner sources of both the intent and the act.
Parker Palmer, The Courage to Teach