4. Fourth Reason

26, The fourth reason is taken from the potentiality of a created agent [e.g. William of Ware, Giles of Rome], and it is as follows: no created agent is pure act or pure being; therefore none of its actions is pure act but has something of potentiality in it; but second act, being mixed with potency, is not without motion or change [cf. Ord. I d.2 n.311-312, II d.1 nn.315-316]; therefore no created agent can act without motion and change; therefore it cannot create, for creation is from nothing but motion is in a subject.