Wisdom 13:9

3. Let me lay bare before my God that twenty-ninth year of my age. There had at this time come to Carthage a certain bishop of the Manichæans, by name Faustus, a great snare of the devil, and in any were entangled by him through the allurement of his smooth speech; the which, although I did commend, yet could I separate from the truth of those things which I was eager to learn. Nor did I esteem the small dish of oratory so much as the science, which this their so praised Faustus placed before me to feed upon. Fame, indeed, had before spoken of him to me, as most skilled in all becoming learning, and pre-eminently skilled in the liberal sciences. …

7. Those, however, to whom I refer have inquired into these things with trustworthy calculations, so that they can not only state the reason of eclipses, both solar and lunar, but also predict their occurrence long before they take place, and are able to determine by mathematical computation the precise intervals at which these must happen, and to state the results in treatises, by reading and understanding which any others may foretell as well as they the coming of these eclipses, and find their prediction verified by the event. …

32. Nor can we exclude from this kind of superstition those who were called genethliaci , on account of their attention to birthdays, but are now commonly called mathematici . For these, too, although they may seek with pains for the true position of the stars at the time of our birth, and may sometimes even find it out, yet in so far as they attempt thence to predict our actions, or the consequences of our actions, grievously err, and sell inexperienced men into a miserable bondage. For when any freeman goes to an as trologer of this kind, he gives money that he may come away the slave either of Mars or of Venus, or rather, perhaps, of all the stars to which those who first fell into this error, and handed it on to posterity, have given the names either of beasts on account of their likeness to beasts, or of men with a view to confer honor on those men. …

What do you say to the statement, that amongst the works of God there are some which it is more difficult to know than even God Himself, so far, indeed, as He can be an object of knowledge to us at all? For we have learnt that God is a Trinity; but to this very day we do not know how many kinds of animals, not even of land animals which were able to enter Noah’s ark, He has created, unless by some happy chance you have ascertained this fact. Again, in the Book of Wisdom it is written, “For if they were able to prevail so much, that they could know and estimate the world; how is it that they did not more easily find out the Lord thereof?” Is it because the subject before us is within us that it is therefore not too high for us? For it must be granted that the nature of our soul is a more internal thing than our body. …

2. These men does the Book of wisdom reprove, where it is said, “For if they were able to know so much as to aim at the world, how did they not sooner find out the Lord thereof?” They are accused as wasting their time and their busy disputes in investigating and measuring as it were the creature; they sought out the courses of the stars, the intervals of the planets, the movements of the heavenly bodies, so as to arrive by certain calculations to that degree of knowledge as to foretell the eclipses of the sun and moon; and that as they had foretold, so should the event be according to the day and hour, and to the portion of the bodies which should be eclipsed. Great industry, great activity of mind. But in these things they sought after the Creator, who was not far off from them, and they found Him not. Whom if they could have found, they might have had within them. …