Many of the snarly bad-tempered teachers whom we remember with hatred were really nice people soured by years of anxiety and penny-pinching.

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

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

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.

Wherever there are beginners and experts, old and young, there is some kind of learning going on, some kind of teaching. We are all pupils and we are all teachers.

Like all great teachers he knew that a picture is worth a thousand words and that people learn most quickly by doing something or seeing something done.

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