Each One, Teach One...to Teach One... to Teach One....

"Nothing in education needs more explaining than this, that a teacher may be neither a professor, nor an educator, that a professor may mature to the age of retirement without teaching or educating, and that an educator, without loss of reputation may profess nothing, and never face a class.
A teacher is one who shows his fellow man how to do something, who imparts an active skill, and who kindles the desire to acquire this skill and to use it. In all creatures, there is a natural ambition to live, which necessarily includes an ambition to learn, but even a natural ambition will need encouragement. The cow teaches the newborn calf to walk, the mother bird teaches her young to fly,
though neither cow nor bird, so far as we know, has a teacher's diploma, or the equivalent, from a normal school. If the calf is reluctant to stand up, the cow gets behind and under, and gives a boost. If the fledgling recoils from the unsolid air, the mother bird pushes it overboard. That is teaching, of no mean sort." --John Erskine, My Life as a Teacher