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

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

Being an only child is a disease in itself.

Puberty for a girl is like floating down a broadening river into an open sea.

There is no more wild, free, vigorous growth of the forest, but everything is in pots or rows like a rococo garden... The pupil is in the age of spontaneous variation which at no period of life is so great. He does not want a standardized, overpeptonized mental diet. It palls on his appetite.

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

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