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

— G. Stanley Hall

Civilization is so hard on the body that some have called it a disease, despite the arts that keep puny bodies alive to a greater average age, and our greater protection from contagious and germ diseases.

— G. Stanley Hall

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

— G. Stanley Hall

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

— G. Stanley Hall