If you would know anything thoroughly, teach it to others.
—Tryon Edwards in A Dictionary of Thoughts
A teacher affects eternity; he can never tell where his influence stops.
Good teaching is one-fourth preparation and three-fourths theater.
I am always ready to learn although I do not always like being taught.
The true teacher defends his pupils against his own personal influence.
Teaching is not a lost art, but regard for teaching is a lost tradition.
If you would thoroughly know anything, teach it to others.
—W. C. Sellar and R. J. Yeatman