G. Stanley Hall — American Psychologist born on February 01, 1844, died on April 24, 1924

Granville Stanley Hall was a pioneering American psychologist and educator. His interests focused on childhood development and evolutionary theory. Hall was the first president of the American Psychological Association and the first president of Clark University. A Review of General Psychology survey, published in 2002, ranked Hall as the 72nd most cited psychologist of the 20th century, in a tie with Lewis Terman... (wikipedia)

Adolescence is a new birth, for the higher and more completely human traits are now born.
Man is largely a creature of habit, and many of his activities are more or less automatic reflexes from the stimuli of his environment.
Muscles are in a most intimate and peculiar sense the organs of the will.
Abundance and vigor of automatic movements are desirable, and even a considerable degree of restlessness is a good sign in young children.
Puberty for a girl is like floating down a broadening river into an open sea.