Chapter 21.--Superstition of Astrologers.
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. And this is not to be wondered at, when we consider that even in times more recent and nearer our own, the Romans made an attempt to dedicate the star which we call Lucifer to the name and honor of Cæsar. And this would, perhaps, have been done, and the name handed down to distant ages, only that his ancestress Venus had given her name to this star before him, and could not by any law transfer to her heirs what she had never possessed, nor sought to possess, in life. For where a place was vacant, or not held in honor of any of the dead of former times, the usual proceeding in such cases was carried out. For example, we have changed the names of the months Quintilis and Sextilis to July and August, naming them in honor of the men Julius Cæsar and Augustus Cæsar; and from this instance any one who cares can easily see that the stars spoken of above formerly wandered in the heavens without the names they now bear. But as the men were dead whose memory people were either compelled by royal power or impelled by human folly to honor, they seemed to think that in putting their names upon the stars they were raising the dead men themselves to heaven. But whatever they may be called by men, still there are stars which God has made and set in order after His own pleasure, and they have a fixed movement, by which the seasons are distinguished and varied. And when any one is born, it is easy to observe the point at which this movement has arrived, by use of the rules discovered and laid down by those who are rebuked by Holy Writ in these terms: "For if they were able to know so much that they could weigh the world, how did they not more easily find out the Lord thereof?" [1804]
[1804] Wisd. xiii. 9.
Chapter 22 .--The Folly of Observing the Stars in Order to Predict the Events of a Life.
33. But to desire to predict the characters, the acts, and the fate of those who are born from such an observation, is a great delusion and great madness. And among those at least who have any sort of acquaintance with matters of this kind (which, indeed, are only fit to be unlearnt again), this superstition is refuted beyond the reach of doubt. For the observation is of the position of the stars, which they call constellations, at the time when the person was born about whom these wretched men are consulted by their still more wretched dupes. Now it may happen that, in the case of twins, one follows the other out of the womb so closely that there is no interval of time between them that can be apprehended and marked in the position of the constellations. Whence it necessarily follows that twins are in many cases born under the same stars, while they do not meet with equal fortune either in what they do or what they suffer, but often meet with fates so different that one of them has a most fortunate life, the other a most unfortunate. As, for example, we are told that Esau and Jacob were born twins, and in such close succession, that Jacob, who was born last, was found to have laid hold with his hand upon the heel of his brother, who preceded him. [1805] Now, assuredly, the day and hour of the birth of these two could not be marked in any way that would not give both the same constellation. But what a difference there was between the characters, the actions, the labors, and the fortunes of these two, the Scriptures bear witness, which are now so widely spread as to be in the mouth of all nations.
34. Nor is it to the point to say that the very smallest and briefest moment of time that separates the birth of twins, produces great effects in nature, and in the extremely rapid motion of the heavenly bodies. For, although I may grant that it does produce the greatest effects, yet the astrologer cannot discover this in the constellations, and it is by looking into these that he professes to read the fates. If, then, he does not discover the difference when he examines the constellations, which must, of course, be the same whether he is consulted about Jacob or his brother, what does it profit him that there is a difference in the heavens, which he rashly and carelessly brings into disrepute, when there is no difference in his chart, which he looks into anxiously but in vain? And so these notions also, which have their origin in certain signs of things being arbitrarily fixed upon by the presumption of men, are to be referred to the same class as if they were leagues and covenants with devils.
[1805] Gen. xxv. 24.