15. The progression of these things is precisely like that of all things of the will through the understanding into bodily acts. The will brings forth nothing from itself apart from the understanding, nor does the understanding bring forth anything from itself apart from the will. In order that anything may come forth into manifest being, the two must act in conjunction. Or, what is the same: Affection, which belongs to the will, brings forth nothing from itself except by means of thought, which is of the understanding (the converse also being true), for in order that anything may come forth into manifest being the two must act in conjunction. For consider: If you take away from thought all affection belonging to some love, can you exercise thought? Or if from the affection you take away all thought, are you then able to be affected by anything? Or, what is much the same, if you take away affection from thought, can you speak anything? Or if you take away thought or understanding from affection, can you do anything? It is the same with charity and faith.