Whether the will is moved by an exterior principle?

Objections

Objection 1 : It would seem that the will is not moved by anything exterior. For the movement of the will is voluntary. But it is essential to the voluntary act that it be from an intrinsic principle, just as it is essential to the natural act. Therefore the movement of the will is not from anything exterior.
Objection 2 : Further, the will cannot suffer violence, as was shown above (Question [6], Article [4]). But the violent act is one "the principle of which is outside the agent" [*Aristotle, Ethic. iii, 1]. Therefore the will cannot be moved by anything exterior.
Objection 3 : Further, that which is sufficiently moved by one mover, needs not to be moved by another. But the will moves itself sufficiently. Therefore it is not moved by anything exterior.