Eight things there be a Comet brings,
When it on high doth horrid rage;
Wind, Famine, Plague, and Death to Kings,
War, Earthquakes, Floods, and Direful Change. [4]
The literature on magic was extensive. The most miraculous happenings were recorded and believed. Trial by ordeal, following careful religious formulae, was common before 1200, though prohibited shortly afterward by papal decrees (1215, 1222). The insistence of the Church on "the willful, devilish character of heresy," and the extension of heresy to cover almost any form of honest doubt or independent inquiry, caused an intellectual stagnation along lines of scientific investigation which was not relieved for more than a thousand years. The many notable advances in physics, chemistry, astronomy, and medicine made by Moslem scholars (chapter VIII) were lost on Christian Europe, and had to be worked out again centuries later by the scholars of the western world. Out of the astronomy of the Arabs the Christians got only astrology; out of their chemistry they got only alchemy. Both in time stood seriously in the way of real scientific thinking and discovery.
GROWING TOLERANCE CHANGED BY THE PROTESTANT REVOLTS. After the rise of the universities, the expansion of the minds of men which followed the Crusades and the revival of trade and industry, the awakening which came with the revival of the old learning and the rise of geographical discovery, the church authorities assumed a broader and a more tolerant attitude toward inquiry and reason than had been the case for hundreds of years. It would have been surprising, with the large number of university- trained men entering the service of the Church, had this not been the case. By the middle of the fifteenth century it looked as though the Renaissance spirit might extend into many new directions, and by 1500 the world seemed on the eve of important progress in almost every line of endeavor. As was pointed out earlier (p. 259), the Church was more tolerant than it had been for centuries, and about the year 1500 was the most stimulating time in the history of our civilization since the days of Alexandria and ancient Rome.
In 1517 Luther nailed his theses to the church door in Wittenberg. The Church took alarm and attempted to crush him, and soon the greatest contest since the conflict between paganism and Christianity was on. Within half a century all northern lands had been lost to the ancient Church (see map, p. 296); the first successful challenge of its authority during its long history.
The effect of these religious revolts on the attitude of the Church toward intellectual liberty was natural and marked. The tolerance of inquiry recently extended was withdrawn, and an era of steadily increasing intolerance set in which was not broken for more than a century. In an effort to stop the further spread of the heresy, the Church Council of Trent (1545-63) adopted stringent regulations against heretical teachings (p. 303), while the sword and torch and imprisonment were resorted to to stamp out opposition and win back the revolting lands. A century of merciless warfare ensued, and the hatreds engendered by the long and bitter struggle over religious differences put both Catholic and Protestant Europe in no tolerant frame of mind toward inquiry or new ideas. The Inquisition, a sort of universal mediaeval grand jury for the detection and punishment of heretics, was revived, and the Jesuits, founded in 1534-40, were vigorous in defense of the Church and bitter in their opposition to all forms of independent inquiry and Protestant heresy.
It was into this post-Reformation atmosphere of suspicion and distrust and hatred that the new critical, inquiring, questioning spirit of science, as applied to the forces of the universe, was born. A century earlier the first scientists might have obtained a respectful hearing, and might have been permitted to press their claims; after the Protestant Revolts had torn Christian Europe asunder this could hardly be. As a result the early scientists found themselves in no enviable position. Their theories were bitterly assailed as savoring of heresy; their methods and purposes were alike suspected; and any challenge of an old long-accepted idea was likely to bring a punishment that was swift and sure. From the middle of the sixteenth to the middle of the seventeenth century was not a time when new ideas were at a premium anywhere in western Europe. It was essentially a period of reaction, and periods of reaction are not favorable to intellectual progress. It was into this century of reaction that modern scientific inquiry and reasoning, itself another form of expression of the intellectual attitudes awakened by the work of the humanistic scholars of the Italian Renaissance, made its first claim for a hearing.
THE BEGINNINGS OF MODERN SCIENTIFIC METHOD. One of the great problems which has always deeply interested thinking men in all lands is the nature and constitution of the material universe, and to this problem people in all stages of civilization have worked out for themselves some kind of an answer. It was one of the great speculations of the Greeks, and it was at Alexandria, in the period of its decadence, that the Egyptian geographer Ptolemy (138 A.D.) had offered an explanation which was accepted by Christian Europe and which dominated all thinking on the subject during the Middle Ages. He had concluded that the earth was located at the center of the visible universe, immovable, and that the heavenly bodies moved around the earth, in circular motion, fixed in crystalline spheres. [5] This explanation accorded perfectly with Christian ideas as to creation, as well as with Christian conceptions as to the position and place of man and his relation to the heavens above and to a hell beneath. This theory was obviously simple and satisfactory, and became sanctified with time. As we see it now the wonder is that such an explanation could have been accepted for so long. Only among an uninquisitive people could so imperfect a theory have endured for over fourteen centuries.
[Illustration: FIG. 113. NICHOLAS KOPERNIK (Copernicus), (1473-1543)]
In 1543 a Bohemian church canon and physician by the name of Nicholas Copernicus published his De Revolutionibus Orbium Celestium, in which he set forth the explanation of the universe which we now know. He piously dedicated the work to Pope Paul III, and wisely refrained from publishing it until the year of his death. [6] Anything so completely upsetting the Christian conception as to the place and position of man in the universe could hardly be expected to be accepted, particularly at the time of its publication, without long and bitter opposition.
In the dedicatory letter (R. 205), Copernicus explains how, after feeling that the Ptolemaic explanation was wrong, he came to arrive at the conclusions he did. The steps he set forth form an excellent example of a method of thinking now common, but then almost unknown. They were: