A teacher must believe in the value and interest of his subject as a doctor believes in health.

A very wise old teacher once said: I consider a day's teaching wasted if we do not all have one hearty laugh.

These are not books, lumps of lifeless paper, but minds alive on the shelves.

If you do not actually like boys and girls, or young men and young women, give up teaching.

Know the subject; love the subject; like your students; know your students.

I believe that much of the maladjustment in our societies is caused, not by malevolence and corruption, but simply by ignorance.

Many of the twisted minds and crippled characters in the world were made by careless parents who kept their children away from knives and fires, but put permanent scars on their souls.