The astute but weary teacher would point to the first clause of the epigram and dismiss it as quixotic. The majority of students do not initially enter the classroom with a genuine desire to, say, describe a picture in English. The teacher must instill it in them. This is the most important task he faces and this is largely achieved by his own enthusiasm. The teacher must be the most enthusiastic person in the room.
Enthusiasm is eerily contagious.
The lecturer, a plump and immaculately dressed man, stormed into the room and, from that moment on, never lost our attention. To think that someone could be so excited about the irregular plurals in English was a little odd at first, but it nevertheless made us listen to find out what could induce such animated grimaces and gesticulations. In the following week, the attendance doubled. The good teacher then, has a veritable passion for what he teaches or, less romantic but equally effective, can pretend to be. To assume that a human being can be veritably fascinated by the prospect of describing a picture in English would transcend the boundaries of good sense.