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.

A good teacher is a determined person

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

The aim of those who try to control thought is always the same. They find one single explanation of the world, one system of thought and action that will (they believe) cover everything; and then they try to impose that on all thinking people.

Many people have played themselves to death. Many people have eaten and drunk themselves to death. Nobody ever thought himself to death.

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

The wise teacher knows that 55 minutes of work plus 5 minutes laughter are worth twice as much as 60 minutes of unvaried work.