"Wrist-bowing is one of the bowings in which the student should learn to
feel absolutely and naturally at home. To my thinking the German way of
teaching wrist-bowing is altogether wrong. Their idea is to keep the
fingers neutral, and let the stick move the fingers! Yet this is
wrong--for the player holds his bow at the finger-tips, that terminal
point of the fingers where the tactile nerves are most highly developed,
and where their direct contact with the bow makes possible the greatest
variety of dynamic effect, and also allows the development of far
greater speed in short bowings.
"Though the Germans say 'Think of the wrist!' I think with the Belgians:
Put your mind where you touch and hold the bow, concentrate on your
fingers. In other words, when you make your bow change, do not make it
according to the Joachim method, with the wrist, but in the natural way,
with the fingers always in command. In this manner only will you get the
true wrist motion.