The authority of Sergi was enough to convince many that...

 "The authority of [Giuseppe] Sergi was enough to convince many that, given such knowledge of the individual, the art of educating him would develop naturally.  This, as often happens, led to a confusion of ideas among his followers, arising now from a too literal interpretation, now from an exaggeration, of the master's ideas.  The chief trouble lay in confusing the experimental study of the pupil, with his education.  And since the one was the road leading to the other, which should have grown from it naturally and rationally, they straightway gave the name of Scientific Pedagogy to what was in truth pedagogical anthropology."  Maria Montessori, The Montessori Method, Chapter 1, p.3, Schocken Books, Inc., 1964.