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

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

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

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

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

The man of the future may, and even must, do things impossible in the past and acquire new motor variations not given by heredity.

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