 Sometimes the attention of the superior part of the soul is in such a state that it is able to invent and form various things with respect to the cognitive powers and, similarly, to refuse and approve with respect to appetitive powers; then it is said to deliberate and combine, to consent and choose. And nevertheless it does not move to these acts freely, as it does when awake, because it moves itself to these acts in such a way that it does not have a power to move itself otherwise. (Summa II q. 59, p. 564)