The selfsame procedure which zoology, a branch of the natural sciences, applies to the study of animals, anthropology must apply to the study of man; and by doing so, it enrolls itself as a science in the field of nature.

The possibility of observing the developments of the psychical life of the child as natural phenomena and experimental reactions transforms the school itself in action into a kind of scientific laboratory for the psychogenetic study of man.

The study of expression ought to form a part of the study of psychology, but it also comes within the province of anthropology because the habitual, life-long expressions of the face determine the wrinkles of old age, which are distinctly an anthropological characteristic.

One test of the correctness of educational procedure is the happiness of the child.

Travel stories teach geography; insect stories lead the child into natural science; and so on. The teacher, in short, can use reading to introduce her pupils to the most varied subjects; and the moment they have been thus started, they can go on to any limit guided by the single passion for reading.

Speech is one of the marvels that characterize man, and also one of the most difficult spontaneous creations that have been accomplished by nature.