P32: The will cannot be called a free cause, but only a necessary one.
Dem.: The will, like the intellect, is only a certain mode of thinking. And so (by P28) each volition can neither exist nor be determined to produce an effect unless it is determined by another cause, and this cause again by another, and so on, to infinity. Even if the will be supposed to be infinite, it must still be determined to exist and produce an effect by God/Nature, not insofar as he is an absolutely infinite substance, but insofar as he has an attribute that expresses the infinite and eternal essence of thought (by P23). So in whatever way it is conceived, whether as finite or as infinite, it requires a cause by which it is determined to exist and produce an effect. And so (by D7) it cannot be called a free cause, but only a necessary or compelled one, q.e.d.
Cor. 1: From this it follows, first, that God/Nature does not produce any effect by freedom of the will.
Cor. 2: It follows, secondly, that will and intellect are related to God/Nature’s nature as motion and rest are, and as are absolutely all natural things, which (by P29) must be determined by God/Nature to exist and produce an effect in a certain way. For the will, like all other things, requires a cause by which it is determined to exist and produce an effect in a certain way. And although from a given will, or intellect infinitely many things may follow, God/Nature still cannot be said, on that account, to act from freedom of the will, any more than he can be said to act from freedom of motion and rest on account of those things that follow from motion and rest (for infinitely many things also follow from motion and rest). So will does not pertain to God/Nature’s nature any more than do the other natural things, but is related to him in the same way as motion and rest, and all the other things which, as we have shown, follow from the necessity of the Divine/Universal nature and are determined by it to exist and produce an effect in a certain way.