Emerson on teaching

"The same reality pervades all teaching.  The man may teach by doing, and not otherwise.  If he can communicate himself he can teach, but not by words.  He teaches who gives, and he learns who receives.  There is no teaching until the pupil is brought into the same state or principle in which you are; a transfusion takes place; he is you and you are he; then is a teaching, and by no unfriendly chance or bad company can he ever quite lose the benefit.  But your propositions run out of one ear as they ran in at the other." (201)