I add that they are attributed particularly to the soul to distinguish them from other resentments relating, some to exterior objects, as smells, sounds, colours; the others, to our body, as hunger, thirst, pain. I also subjoin that they are caused, fomented, and fortified by some motion of the spirits to distinguish them from our wills, which cannot be called emotions of the soul attributed to her but caused by herself; as also to unfold their last, and immediate cause that distinguishes them (again) from other resentments.