There are two kinds of teachers: the kind that fill you with so much quail shot that you can’t move, and the kind that just gives you a little prod behind and you jump to the skies.
— Robert Frost
He who opens a school door, closes a prison. — Anatole France
If your plan is for a year, plant rice. If your plan is for a decade, plant trees. If your plan is for a lifetime, educate children. — Confucius
I may put some of these quotes on my own office door. 🙂