Adults look upon a child as something empty that is to be filled through their own efforts, as something inert and helpless for which they must do everything, as something lacking an inner guide and in constant need of inner direction. . . . An adult who acts in this way, even though he may be convinced that he is filled with zeal, love, and a spirit of sacrifice on behalf of his child, unconsciously suppresses the development of the child's own personality.
Maria MontessoriPraise, help, or even a look, may be enough to interrupt him, or destroy the activity. It seems a strange thing to say, but this can happen even if the child merely becomes aware of being watched. After all, we too sometimes feel unable to go on working if someone comes to see what we are doing. The great principle which brings success to the teacher is this: as soon as concentration has begun, act as if the child does not exist. Naturally, one can see what he is doing with a quick glance, but without his being aware of it.
Maria Montessori