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.

Muscles are in a most intimate and peculiar sense the organs of the will.

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

.. every step of the upward way is strewn with wreckage of body, mind, and morals.

Adolescence as the time when an individual ‘recapitulates’ the savage stage of the race’s past.

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

Being an only child is a disease in itself.