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

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

Constant muscular activity was natural for the child, and, therefore, the immense effort of the drillmaster teachers to make children sit still was harmful and useless.

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

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.

Modern man was not meant to do his best work before forty but is by nature, and is becoming more so, an afternoon and evening worker.