It is the psychology of the boy and the girl which makes it necessary to give certain things to the boy and certain things to the girl; but as they develop they take each other's qualities; with development it comes naturally. Balance is best, whether in the boy or in the girl; and balance comes through opposite qualities. The work of the teacher is not to teach balance, the work of the teacher is to teach qualities; life will bring about balance by itself, as long as boys and girls are taught that particular quality which belongs to them.