  Nonetheless, up to this point, La Forge has only proved that force of movement is not something corporeal. This implies that all physical movements are always brought about by immaterial causes, which allows that in some cases, immaterial substances like human minds can cause some physical movements, i.e. voluntary motions, through the law of their union with the body. However, La Forge clearly would not assert that finite immaterial substances, such as angels or intermediate kinds of beings, produce every physical movement. Therefore, La Forge still needs a further argument to refute this kind of inference and show that, generally speaking, God himself directly moves physical bodies.