This, we need not say, is all wrong. The two orders are distinct, not separate and mutually independent orders, nor parallel orders with no real or logical relation between them. They are, in reality, only two parts of one and the same whole. We do not undertake to say what God could or could not have done had he chosen. If he could have created man and left him in a state of pure nature, as he has the animals, we know he has not done so. He has created man for a supernatural destiny, and placed him under a supernatural or gracious providence, so that, as a fact, man is never in a state of pure nature. He aspires to a supernatural reward, and is liable to a supernatural punishment. His life is always above pure nature, or below it. The highest natural virtue is imperfect, and no sin is simply a sin against the natural law. The natural is not the supernatural, but was never intended to subsist without it. The supernatural is not an interpolation in the divine plan of creation, nor something superinduced upon it, but is a necessary complement of the natural, which never is or can be completed in the natural alone. In the divine plan, the two orders are coeval, always coexist, and operate simultaneously to one and the same end, as integral parts of one whole. The natural, endowed with reason and free-will, may resist the supernatural, or refuse to co-operate with it; but if it does so, it must remain inchoate, incomplete, an existence commenced yet remaining for ever unfulfilled, which is the condition of the reprobate. A true and adequate philosophy explains man's origin, medium, and end; and no such philosophy can be constructed by reason alone; for these are supernatural, and are fully known only through a supernatural revelation.