Axiom: You can’t teach anyone anything without intentionally or accidentally modeling humanity for them. It isn’t enough to adequately convey information to students or take care of the mechanics of teaching – this is just feeding and changing diapers. You have to choose or (more properly) cultivate the form of humanity you want to perform/become/become through performing/perform through becoming.
Corollary 1: The most important and humbling thing that any teacher must learn is respect for humanity that fundamentally differs from yours. If you are studious and a hard worker, you have to avoid the temptation to identify with and reward your students who are studious hard workers. If you are a charismatic and eloquent speaker, you have to resist the urge to cut your charismatic students more slack. This is above all true when this identification with your students flatters your own (perhaps aspiring) identity in some way.
Corollary 2: The first corollary to this axiom does not follow logically from it, but rather contradicts it. This is just and proper.
Corollary 3: The Latin word for both this axiom and its first corollary is caritas. It means both charity and love.