The highest stage of development which Naïve Realism attains in the sphere of morality is that at which the moral law (the moral idea) is conceived as having no connection with any external being, but, hypothetically, as being an absolute power in one's own consciousness. What man first listened to as the voice of God, to that he now listens as an independent power in his own mind which he calls conscience. This conception, however, takes us already beyond the level of the naïve consciousness into the sphere where moral laws are treated as independent norms. They are there no longer made dependent on a human mind, but are turned into self-existent metaphysical entities. They are analogous to the visible-invisible forces of Metaphysical Realism. Hence also they appear always as a corollary of Metaphysical Realism, which seeks reality, not in the part which human nature, through its thinking, plays in making reality what it is, but which hypothetically posits reality over and above the facts of experience. Hence these extra-human moral norms always appear as corollaries of Metaphysical Realism. For this theory is bound to look for the origin of morality likewise in the sphere of extra-human reality. There are different possible views of its origin. If the thing-in-itself is unthinking and acts according to purely mechanical laws, as modern Materialism conceives that it does, then it must also produce out of itself, by purely mechanical necessity, the human individual and all that belongs to him. On that view the consciousness of freedom can be nothing more than an illusion. For whilst I consider myself the author of my action, it is the matter of which I am composed and the movements which are going on in it that determine me. I imagine myself free, but actually all my actions are nothing but the effects of the metabolism which is the basis of my physical and mental organisation. It is only because we do not know the motives which compel us that we have the feeling of freedom. "We must emphasise that the feeling of freedom depends on the absence of external compelling motives." "Our actions are as much subject to necessity as our thoughts" (Ziehen, Leitfaden der Physiologischen Psychologie, pp. 207, ff.). [7]