Two things are necessary, the development of individuality and the participation of the individual in a truly social life.
Maria MontessoriThe prize and punishments are incentives toward unnatural or forced effort, and, therefore we certainly cannot speak of the natural development of the child in connection with them.
Maria MontessoriThe development of the individual can be described as a succession of new births at consecutively higher levels.
Maria MontessoriBy the age of three, the child has already laid down the foundations of his personality as a human being, and only then does he need the help of special scholastic influences. So great are the conquests he has made that one may well say: the child who goes to school at three is already a little man.
Maria Montessori