13. Let us first learn, then, how they who have taken this teaching from the astrologers insult Christ, working destruction for those who follow them in such error. For the astrologers, having declared the cosmos to be one, divided it[195] into the twelve fixed parts of the Zodiacal signs, and call the cosmos of the fixed Zodiacal signs one unwandering world. But the other, they say, is the world of the planets alike in power and in position and in number which exists as far as the Moon.[196] And that one world receives from the other a certain power and communion, and that things below partake of things above. But so that what is said shall be made plain, I will use in part the very words of the astrologers,[197] recalling to the readers what was said before in the place where we set forth the whole art of astrology. Their doctrines then are these: From the emanation of the stars the genitures of things below are influenced. For the Chaldæans, scrutinizing [Sidenote: p. 189.] the heavens with great care, said that (the seven stars) account for the active causes of everything which happens to us; but that the degrees of the Zodiacal circle work with them. (Then they divide the Zodiacal circle into) 12 parts, and each Zodiacal sign into 30 degrees and each degree into 60 minutes; for these they call the least and the undivided. And they call some of the Zodiacal signs male and others female, some bicorporal and others not, some tropical and others firm. Then there are male or female according as they have a nature co-operating in the begetting of males (or females). Moved by which, I think[198] the Pythagoricians[199] call the monad male, the dyad female, and the triad again male and in like manner the rest of the odd and even numbers. And some dividing each sign into dodecatemories employ [Sidenote: p. 190.] nearly the same plan. For example, in Aries they call the first dodecatemory Aries and masculine, its second Taurus and feminine, and its third Gemini and masculine, and so on with the other parts. And they say that Gemini and Sagittarius which stands opposite to it and Virgo and Pisces are bicorporal signs, but the others not. And in like manner, those signs are tropical in which the Sun turns about and makes the turnings of the ambient, as, for example, the sign Aries and its opposite Libra, Capricorn and Cancer. For in Aries, the spring turning occurs, in Capricorn the winter, in Cancer the summer and in Libra the autumn. These things also and the system concerning them we have briefly set forth in the book before this, whence the lover of learning can learn how Euphrates the Peratic and Celbes the Carystian, the founders of the heresy, altering only the names, have really set down like things, having also paid immoderate attention to the art. [Sidenote: p. 191.] For the astrologers also say that there are “terms” of the stars in which they deem the ruling stars to have greater power. For example in some (they do evil), but in others good, of which they call these malefic and those benefic. And they say that (the Planets) behold one another and are in harmony with one another as they appear in trine (or square). Now the stars beholding one another are figured in trine when they have a space of three signs between them, but in square if they have two. And as in the man the lower parts suffer with the head and the head suffers with the lower parts, thus do the things on earth [Sidenote: p. 192.] with those above the Moon. But (yet) there is a certain difference and want of sympathy between them since they have not one and the same unity.