18. Next to the knowledge of this venerable and glorious and all-holy Faith, learn further what thou thyself art: that as man thou art of a two-fold nature, consisting of soul and body; and that, as was said a short time ago, the same God is the Creator both of soul and body. Know also that thou hast a soul self-governed, the noblest work of God, made after the image of its Creator: immortal because of God that gives it immortality; a living being, rational, imperishable, because of Him that bestowed these gifts: having free power to do what it willeth. For it is not according to thy nativity that thou sinnest, nor is it by the power of chance that thou committest fornication, nor, as some idly talk, do the conjunctions of the stars compel thee to give thyself to wantonness. Why dost thou shrink from confessing thine own evil deeds, and ascribe the blame to the innocent stars? Give no more heed, pray, to astrologers; for of these the divine Scripture saith, Let the stargazers of the heaven stand up and save thee, and what follows: Behold, they all shall be consumed as stubble on the fire, and shall not deliver their soul from the flame.