On moral grounds, St. Thomas advocates freedom energetically; but, with his premises, he can have in mind only the psychological form of self-motivation. Nothing in the world is accidental or free, although it may appear so in reference to the proximate cause. From this point of view, miracles become necessary in themselves and are to be considered merely as inexplicable to man. From the point of view of the first cause, all is unchangeable, although from the limited point of view of the secondary cause, miracles may be spoken of.