The teens are emotionally unstable and pathic. It is a natural impulse to experience hot and perfervid psychic states, and it is characterized by emotionalism. We see here the instability and fluctuations now so characteristic. The emotions develop by contrast and reaction into the opposite.
G. Stanley HallThe 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 HallAbundance and vigor of automatic movements are desirable, and even a considerable degree of restlessness is a good sign in young children.
G. Stanley HallNormal children often pass through stages of passionate cruelty, laziness, lying and thievery.
G. Stanley HallMuscles are in a most intimate and peculiar sense the organs of the will. They have built all the roads, cities and machines in the world, written all the books, spoken all the words, and, in fact done everything that man has accomplished with matter. Character might be a sense defined as a plexus of motor habits.
G. Stanley Hall