Education has now become the chief problem of the world, its one holy cause. The nations that see this will survive, and those that fail to do so will slowly perish. . . . There must be re-education of the will and of the heart as well as of the intellect; and the ideals of service must supplant those of selfishness and greed.

Every theory of love, from Plato down teaches that each individual loves in the other sex what he lacks in himself.

Modern man was not meant to do his best work before forty but is by nature, and is becoming more so, an afternoon and evening worker.

Being an only child is a disease in itself.

Constant muscular activity was natural for the child, and, therefore, the immense effort of the drillmaster teachers to make children sit still was harmful and useless.

Of all work-schools, a good farm is probably the best for motor development.

Adolescence is a new birth, for the higher and more completely human traits are now born.