I have closely studied the figured documents of all ages and of all the great masters, but I have never seen in them any representations of human beings walking on the extremity of the toes or raising the leg higher than the head. These ugly and false positions in no way express that state of unconscious Dionysiac delirium which is necessary to the dancer. Moreover movèments, just like harmonies in music, are not invented; they are discovered.

As quoted in Modern Dancing and Dancers (1912) by John Ernest Crawford Flitch, p. 106.