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

The teens are emotionally unstable and pathic. It is a natural impulse to experience hot and perfervid psychic states, and it is characterized by emotionalism. We see here the instability and fluctuations now so characteristic. The emotions develop by contrast and reaction into the opposite.

Abundance and vigor of automatic movements are desirable, and even a considerable degree of restlessness is a good sign in young children.

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

Normal children often pass through stages of passionate cruelty, laziness, lying and thievery.

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

Precisely what menstruation is, is not yet very well known.