From the original Faust Book manuscript of 1580(?):
A Disputatio, or Inquiry Concerningthe Art of Astronomia, or AstrologiaXIII:
“One time after Doctor Faustus had been contriving and producing such horoscopes and almanacs for about two years he did ask his spirit about the nature of astronomia or astrologia as practiced by the mathematici. The spirit gave answer, saying: My Lord Fauste, it is so ordained that the ancient haruspices and modern stargazers are unable to forecast anything particularly certain, for these are deep mysteries of God which mortals cannot plumb as we spirits can, who hover in the air beneath Heaven where we can see and mark what God bath predestined. Yes, we are ancient spirits, experienced in the Heavenly movements. Why, Lord Fauste, I could make thee a perpetual calendar for the setting of horoscopes and almanacs or for nativity investigations one year after the other. –Thou hast seen that I have never lied to thee. Now it is true that the Patriarchs, who lived for five and six hundred years, did comprehend the fundamentals of this art and became very adept. For when such a great number of years elapse a lunisolar period is completed, and the older generation can apprise the younger of it. Except for that, all green, inexperienced astrologi have to set up their horoscopes arbitrarily according to conjecture.”
Pasted from <http://lettersfromthedustbowl.com/Fbk2.html>