Mr. Robert M. Dederich, an esteemed friend and retired master teacher.
Teaching is an ancient and, on the whole, an honorable activity.
However, objectives differ, methods differ, and just because an instructor knows the subject, you cannot assume that the training will be effective. However, His teaching method, with all due respect, might have been improved. Satan, however, went about his instructions with a more sharply defined objective, and didn't lecture of generalize. Don't act like God Almighty when you get in front of a class. Instead, teach like the Devil.