" the fundamental phrase which sums up Séguin's whole method,—"to lead the child, as it were, by the hand, from the education of the muscular system, to that of the nervous system, and of the senses." It was thus that Séguin taught the idiots how to walk, how to maintain their equilibrium in the most difficult movements of the body—such as going up stairs, jumping, etc., and finally, to feel, beginning the education of the muscular sensations by touching, and reading the difference of temperature, and ending with the education of the particular senses. "

― Maria Montessori , The Montessori Method