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

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

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

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

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

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

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