“…I have repeatedly had students come for instruction who have after great effort prepared one, two, or at the most three show pieces, even pieces as far advanced as the Tchaikovsky or the Liszt Concerto, who barely knew what key they were playing in.  … Study of this kind is not only a great waste of the pupil’s time but also a disgusting waste of the time of the advanced teacher, who realizes that he is not training a real musician but a kind of musical parrot whose playing must always be meaningless.”  …From his ‘Basic Principles in Pianoforte Playing’