The 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 MontessoriTimes have changed, and science has made great progress, and so has our work; but our principles have only been confirmed, and along with them our conviction that mankind can hope for a solution to its problems, among which the most urgent are those of peace and unity, only by turning its attention and energies to the discovery of the child and to the development of the great potentialities of the human personality in the course of its formation.
Maria Montessori