The mediocre teacher tells. The good teacher explains. The superior te >>
The winner persistently programs his pluses; the loser mournfully magn >>
Every great person has first learned how to obey, whom to obey, and wh >>
To teach well, we need not say all that we know, Successful teachers a >>
Teaching isn't one-tenth as effective as training. >>
He who can, does. He who cannot, teaches. >>
The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates. The great teacher inspires.