Thus shut in the deep, he broods until his thoughts take outward shape and form, and there arises "a wide World of solid obstruction." He then proceeds to write his books of wisdom. But his vision being quenched, he is confined to that which his still all-flexible senses provide. He knows much about the terrible monsters that inhabit the bosoms of all--the seven deadly sins of the soul. From his prolonged fightings and conflicts with them there is distilled a kind of wisdom, which he gathers into his books; but it is joyless wisdom, negative rather than positive, restrictive, retributive, censorious, jealous, cruel, penal, and is best solidified in the decalogue with its reiterated "Thou shalt not." Eternity, which is present and within, rolled wide apart, "leaving ruinous fragments of life." Rent from eternity, Urizen becomes a clod of clay, and Los, beholding him, becomes like him, and is compelled to continue the work of creation in constricted forms. With his hammer he forges links of hours, days, and years. Man with his head, spine, heart, appears; then are formed his eyes, ears, nostrils, throat, tongue, feet--little members that hide from him eternity, and cause him to see the things that are within as though they were without, like the stars of night seen through a great telescope. After the man the woman appears, whom the Eternal myriads named Pity. She is an emanation from Los, and is named by Blake Enitharmon. Los embraces her, and she begets a child in her own image--a Human Shadow, who is named Orc (passion). Thus grows up a world of men, women, children, with their various hungers and needs. The Eternals try to provide for these needs by science and religion; but as they can build their science and religion only from their experience and observation of the contracted universe, the science is sand, and religion a web, and earth's wretched children remain under the cruel rule and curse of Urizen and his sons, calling his laws of Prudence the Eternal Laws of God. _The Song of Los_ (engraved 1795) adds many interesting particulars of the process by which the world, with its philosophies and religions, has become what it is. Los, the Eternal Prophet, is the father of all systems of thought, but it does not follow that all are equally true. For Los is out of the divine order, and therefore the systems inspired by him and his many sons, while containing streaks of the eternal truths, are all out of focus. [Illustration: LOS. _From The First Book of Urizen._] Thus Rintrah gave Abstract Philosophy to Brahma in the East, and it is defective because it is abstract. The same applies to all modern theosophical revivals of Hindoo religion. An abstraction for Blake was a falling away from concrete reality, and he found his deliverance in the Christian doctrine of God.