 Consequently, reversing B’s direction of motion, a change of one mode (determination), constitutes a lesser modal change than a transference of motion between two bodies, which alters two modes (speed and determination). In this passage, it is important to note that if B were to transfer motion to C, it would change both half of B’s speed and half of its determination, even though the direction of B’s quantity of motion is preserved. As a result, a body’s determination is apparently linked to its magnitude of speed.