Related:

• Teach Me!: I. Wanda Know
• Those who can, do. Those who can't, teach. Those who can't teach, teach teachers.
• Those that know, do. Those that understand, teach. -- Aristotle
• A hypocrite is a person who--but who isn't? -- Don Marqui
• Those who can, do. Those who can't, teach. Those who can't teach, teach gym.
  -- Woody Allen, "Annie Hall...
• He who ceases to learn cannot adequately teach.
• H.L. Mencken's Law: Those who can -- do. Those who can't -- teach.
  Martin's Extension: Those who cannot teach -- administrate....
• Those who can, do; those who can't, teach. Those who can't teach, administrate.