A good teacher is a determined person

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

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

You [the teacher] do not merely insert a lot of facts, if you teach them [the students] properly. It is not like injecting 500 cc. of serum, or administering a year's dose of vitamins.

The art of invective resembles the art of boxing. Very few fights are won with the straight left. It is too obvious, and it can betoo easily countered. The best punches, like the best pieces of invective in this style, are either short-arm jabs, unexpectedly rapid and deadly; or else one-two blows, where you prepare your opponent with the first hit, and then, as his face comes forward, connect with your other fist: one, two. Both are effective; but they can be administered only by a real artist, with a real wish to knock his enemy out.

The young do not demand omniscience. They know it is unattainable. They do demand sincerity.

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