The Motion of Motion

Motion is a mutation from one form into another, and in a similar manner, generation and corruption are not motions. Neither therefore is motion of agent and patient, nor of anything moved and moving,. There is not motion of motion, nor generation of generation, nor in short, mutation of mutation. If therefore the categories are divided by essence or substance, quality, the wear, relation, and quantity, action and passion, it is necessary that there should be three motions: that which is of quantity, that which isof quality, and that which is according to place.