The task of the excellent teacher is to stimulate 'apparently ordinary' people to unusual effort. The tough problem is not in identifying winners: it is in making winners out of ordinary people.
Learning is not so much an additive process, with new learning simply piling up on top of existing knowledge, as it is an active, dynamic process in which the connections are constantly changing and the structure reformatted.
Teaching, without learning, is just talking
The heart is as important as the head in learning
In what may as well be starkly labelled smug satisfaction, an amazing 94% [of college instructors] rate themselves as above average teachers, and 68% rank themselves in the top quarter of teaching performances.