The Popes and Science / The History of the Papal Relations to Science During the Middle Ages and Down to Our Own Time

by James J. Walsh

In discussing the relations of the Fathers towards the astral science, we have already shown how they purged it of some of its grossest errors. But their principal service to the science remains now to be told. For amongst all the vagaries of the science of the heavens, astrology is both in theory and in practice the most deplorable. That the Fathers placed the weight of their great authority in the scale against this superstition, is one of the most praiseworthy of their achievements.

First Efforts at Reform.--At the time that the Fathers began to write, in the century just following the labors of the Apostles, astrology formed everywhere an integral part of the science of astronomy. It was taught in all the schools, Chaldean, Jewish, Grecian and Roman. Almost from the beginning the defenders of the Christian faith proceeded to attack this pernicious error, realizing how inimical it was to the spread of truth which Christ had come to impart. Already in his address to the Greeks, Tatian was heard denouncing the absurdities of Grecian astronomy and astrology. This was in the middle of the second century, just at the close of what is called the Apostolic Period.

A little later, Tertullian, the famed apologist of the then flourishing African Church, placed himself on record as the uncompromising enemy of astrology. With his usual vehemence of language he declared that "of astrologers there should be no speaking even" among Christians; and went to the length of saying that "he cannot hope for heaven whose finger or wand abuses the heavens." These and many similar utterances may be found in his Treatise on Idolatry.

Respect for True Astrology.--With this denunciation of magic and idolatry there went hand in hand, however, a genuine respect [{490}] for the proper science of the heavens. Contemporary with Tertullian, and like him one of the great Christian masters of the period, was Clement Alexandria. To the Catholic astronomer of to-day it is gratifying to find this Father of the Egyptian Church giving generous testimony to the worth of astronomical science. With just discrimination he praises astronomy as "leading the soul nearer to the creative power, as helpful to navigation and husbandry, and as making the soul in the highest degree observant, capable of perceiving the true and detecting the false."

Another contemporary, Hippolytus, was indeed unsparing in his denunciation of astrology. In a treatise of eleven quarto pages, contained in his "Refutation of All Heresies," he riddled with merciless logic the vain pretensions of the Greek astrologers. But he showed that he had no quarrel with a well ordered study of the heavens, by giving liberal praise to Ptolemy, the ablest of the astronomers.

A Universal Teaching.--In far distant Syria, then a choice realm in the Church's patrimony, there was at the beginning of the third century another school of Christian philosophers who joined with their brethren in West and East in waging war on the same dread enemy. A Syrian work, called the Book of the Astrologers, has two quarto pages of excellent quality recounting and scoring the absurdities of current astrological practices. It is so like Hippolytus' work that one seems an echo of the other.

Perhaps the most interesting of all these concordant denunciations is that found in the "Recognitions of Clement," a patristic writing probably of the third century. Here the treatises on astrology run to full ten chapters, a sign that the author had abundant knowledge of the subject. In this work astrology is refuted particularly from the moral point of view. It is convicted of the double charge of being fatalistic in its tendency and subversive of all morality. "Men's conduct," says the author's thesis, "is due to their own free will and not to the configuration of the planets."

Golden Age of Patristic Literature.--So ran on in perfect unity and harmony the steady flow of patristic teaching. It reached its climax, as we should expect to find, in the heroic writers of the fourth century, the golden era of patrology. Lactantius, the Christian Cicero, re-echoed the voices of the past in pronouncing astrology the work of demons. An Augustine, the greatest of the Fathers, confirmed the decision of his predecessors by protesting against the amalgamation of astrology with the true science of nature.

So effectual indeed was the opposition to astrology of the earlier Christian writers, confirmed by the masters of the post-Nicene period, that the practice came to be regarded by all the faithful as a superstition and a danger, and continued to be so esteemed down to the time of the Crusades. For a full millennium, Christian Europe midst all its vicissitudes was spared the absurdities of astrological belief and practice, thanks to the patristic school of writers.

A Surprising Omission.--We have thought it well to bring to light these none too well-known facts regarding one important part of the astronomical teachings of the Fathers. How they could have [{491}] escaped the attention of Andrew D. White, or how he could have failed to find place for them in his voluminous work, it is difficult to understand.