XI. Rhythm in Education
Once again at puberty other forces become independent which guide us into the external world in numerous ways. Hidden within that system of forces is also the capacity for independent reasoning. We can therefore say that the actual medium of the human capacity for reason, the forces within the human being that give rise to reasoning, are basically born only at the time of puberty, and have slowly been prepared for that birth beginning at the age of twelve.
Read this passage in another edition
DEoriginalENEnglish