Old High German translation (c. 830), a Dutch (c. 1280), a Venetian manuscript of the 13th century, and a Middle English manuscript from 1400 that was once owned by Samuel Pepys. In a lost writing entitled On Perfection according to the Doctrine of the Savior, Tatian designates matrimony as a symbol of the tying of the flesh to the perishable world and ascribed the "invention" of matrimony to the devil. He distinguishes between the old and the new man; the old man is the law, the new man the Gospel. Other lost writings of Tatian include a work written before the Oratio ad Graecos that contrasts the nature of man with the nature of the animals, and a Problematon biblion, which aimed to present a compilation of obscure Scripture sayings. Theology The starting-point of Tatian's theology is a strict monotheism which becomes the source of the moral life. Originally, the human soul possessed faith in one God, but lost it with the fall. In consequence, under the rule of demons, man sank into the abominable error of polytheism. By monotheistic faith, the soul is delivered from the material world and from demonic rule and is united with God. God is spirit (pneuma), but not the physical or stoical pneuma; he was alone before the creation, but he had within himself potentially the whole creation. Some scholars consider Tatian's creation theology as the beginning of teaching "ex nihilo" (creation from "nothing"). The means of creation was the dynamis logike ("power expressed in words"). At first there proceeded from God the Logos who, generated in the beginning, was to produce the world by creating matter from which the whole creation sprang. Creation is penetrated by the pneuma hylikon, "world spirit," which is common to angels, stars, men, animals, and plants. This world spirit is lower than the divine pneuma, and becomes in man the psyche or "soul," so that on the material side and in his soul man does not differ essentially from the animals; though at the same time he is called to a peculiar union with the divine spirit, which raises him above the animals. This spirit is the image of God in man, and to it man's immortality is due. The first-born of the spirits (identified with Satan) fell and caused others to fall, and thus the demons originated. The fall of the spirits was brought about through their