What's it take to teach?

I just saw this list on Andrew Kern's most recent Monthly Meditation. Thought it might prove more fodder for our Culture Talks. I am basically posting it here to warn my faculty of impending discussion on these ideas:

The Seven Essential Skills of a Classical Teacher Listening Withholding opinions Maintaining purposeful order Asking questions Assessing understanding Creating and using types (illustrations, examples, stories, etc) Drawing analogies