This splendid subject [mathematics], queen of all exact sciences, and the ideal and norm of all careful thinking.

Oneness with Nature is the glory of childhood; oneness with childhood is the glory of the Teacher.

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

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

Adolescence is when the very worst and best impulses in the human soul struggle against each other for possession.

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

Dancing is imperatively needed to give poise to the nerves, schooling to the emotions, strength to the will, and to harmonize the feelings and the intellect with the body that supports them