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

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

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

A period of high civilization is one in which thoughts fly freely from mind to mind, from one country to another-yes, from the past into the present.

Bad teaching wastes a great deal of effort, and spoils many lives which might have been full of energy and happiness.

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

The best school in the world will scarcely save a boy who hates the school and the purpose it serves and the society that created it.