The real duty of man is not to extend his power or multiply his wealth beyond his needs, but to enrich and enjoy his imperishable possession: his soul.

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

The mind never need stop growing. Indeed, one of the few experiences which never pall is the experience of watching one's own mind and how it produces new interests, responds to new stimuli, and develops new thoughts, apparently without effort and almost independently of one's own conscious control.

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

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

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

The chief aim of education is to show you, after you make a livelihood, how to enjoy living; and you can live longest and best and most rewardingly by attaining and preserving the happiness of learning.