Against all this Blake protested, but without personal heat. He was well aware of Paine's deism, when he helped him to escape to France; and of Voltaire he wrote justly: "He has sinned against the Son of man, and it shall be forgiven him." He protested and he affirmed: "Man is born a Spectre, or Satan, and is altogether an Evil." In this uncompromising affirmation, taken out of the heart of _Jerusalem_, written at the mature age of forty-seven, he cuts himself off sharply, not only from the humanitarian deism of his time, but from the pantheism that invaded so many phases of his thought; he goes beyond the kindly catholic dogma which allows a residuum of original righteousness in fallen man; and, with Whitefield and the Calvinists, denies that he has any righteousness left at all. Hence the utter failure of all empiricism, and the absolute need of Revelation and a supernatural religion. How near he was getting to Dr Johnson! Super-nature, of course, presupposes nature. Blake was obliged to contemplate Nature, and meditate on the ancient difficulties that she still presents.
There are many passages in _The Four Zoas_ to show how alive he was to Nature's loveliness and cruelty. Her cruelty alone convinced him that she could not be taken as a basis for religion. A natural man building his character on a natural religion must be as cruel as his mother. The cruelty finds periodic vent in the lust of war.
Yet why there is so much cruelty in Nature remains a mystery, even to the man who has been driven by her to supernaturalism. Blake maintained that there were two ways of regarding Nature. The natural man, with only five senses to inform him, looks at her and sees a very small portion of the infinite, without ever suspecting the infinite. If he sees her loveliness it will arrest him and hold him fast. The spiritual man, on the contrary, looks not at but through Nature, to the spiritual world of which it is a vegetable mirror.
Here a difficulty presents itself. If Nature be a vegetable mirror of the eternal world, then her cruelties must reflect eternal cruelties. The spiritual man may see Nature far differently from the natural man, but that does not mean that she is merely the picture thrown by man's subjective self on the great abyss. If man were altogether exterminated her cruelties would still continue. Since Blake did not deny all existence to Nature, he was finally obliged to accept the old Christian explanation so finely summed up by St Paul in the eighth chapter of his Epistle to the Romans. Sin and disorder originate in the unseen heavens of the cosmos, where the principalities and powers dwell. Man repeats their sins, and Nature reflects the disorder of their cosmos. Hence there is no redemption in the cosmic heavens. Man enters on his redemption only when he bows the knee to Him who was raised above all heavens. And though "the whole creation groaneth and travaileth together until now," yet at the great manifestation of the sons of God she also "shall be delivered from the bondage of corruption into the glorious liberty of the children of God."