Therefore, having turned over in my mind for a long time this uncertainty of the traditional mathematical methods of calculating the motions of the celestial bodies, I began to grow disgusted that no more consistent scheme of the movements of the mechanism of the universe, set up for our benefit by that best and most law abiding Architect of all things, was agreed upon by philosophers who otherwise investigate so carefully the most minute details of this world. Wherefore I undertook the task of rereading the books of all the philosophers I could get access to, to see whether any one ever was of the opinion that the motions of the celestial bodies were other than those postulated by the men who taught mathematics in the schools. And I found first, indeed, in Cicero, that Niceta perceived that the Earth moved; and afterward in Plutarch I found that some others were of this opinion, whose words I have seen fit to quote here, that they may be accessible to all:—
"Some maintain that the Earth is stationary, but Philolaus the Pythagorean says that it revolves in a circle about the fire of the ecliptic, like the sun and moon. Heraklides of Pontus and Ekphantus the Pythagorean make the Earth move, not changing its position, however, confined in its falling and rising around its own center in the manner of a wheel."
Taking this as a starting point, I began to consider the mobility of the Earth; and although the idea seemed absurd, yet because I knew that the liberty had been granted to others before me to postulate all sorts of little circles for explaining the phenomena of the stars, I thought I also might easily be permitted to try whether by postulating some motion of the Earth, more reliable conclusions could be reached regarding the revolution of the heavenly bodies, than those of my predecessors.
And so, after postulating movements, which, farther on in the book, I ascribe to the Earth, I have found by many and long observations that if the movements of the other planets are assumed for the circular motion of the Earth and are substituted for the revolution of each star, not only do their phenomena follow logically therefrom, but the relative positions and magnitudes both of the stars and all their orbits, and of the heavens themselves, become so closely related that in none of its parts can anything be changed without causing confusion in the other parts and in the whole universe. Therefore, in the course of the work I have followed this plan: I describe in the first book all the positions of the orbits together with the movements which I ascribe to the Earth, in order that this book might contain, as it were, the general scheme of the universe. Thereafter in the remaining books, I set forth the motions of the other stars and of all their orbits together with the movement of the Earth, in order that one may see from this to what extent the movements and appearances of the other stars and their orbits can be saved, if they are transferred to the movement of the Earth. Nor do I doubt that ingenious and learned mathematicians will sustain me, if they are willing to recognize and weigh, not superficially, but with that thoroughness which Philosophy demands above all things, those matters which have been adduced by me in this work to demonstrate these theories. In order, however, that both the learned and the unlearned equally may see that I do not avoid anyone's judgment, I have preferred to dedicate these lucubrations of mine to Your Holiness rather than to any other, because, even in this remote corner of the world where I live, you are considered to be the most eminent man in dignity of rank and in love of all learning and even of mathematics, so that by your authority and judgment you can easily suppress the bites of slanderers, albeit the proverb hath it that there is no remedy for the bite of a sycophant. If perchance there shall be idle talkers, who, though they are ignorant of all mathematical sciences, nevertheless assume the right to pass judgment on these things, and if they should dare to criticise and attack this theory of mine because of some passage of scripture which they have falsely distorted for their own purpose, I care not at all; I will even despise their judgment as foolish. For it is not unknown that Lactantius, otherwise a famous writer but a poor mathematician, speaks most childishly of the shape of the Earth when he makes fun of those who said that the Earth has the form of a sphere. It should not seem strange then to zealous students, if some such people shall ridicule us also. Mathematics are written for mathematicians, to whom, if my opinion does not deceive me, our labors will seem to contribute something to the ecclesiastical state whose chief office Your Holiness now occupies; for when not so very long ago, under Leo X, in the Lateran Council the question of revising the ecclesiastical calendar was discussed, it then remained unsettled, simply because the length of the years and months, and the motions of the sun and moon were held to have been not yet sufficiently determined. Since that time, I have given my attention to observing these more accurately, urged on by a very distinguished man, Paul, Bishop of Fossombrone, who at that time had charge of the matter. But what I may have accomplished herein I leave to the judgment of Your Holiness in particular, and to that of all other learned mathematicians; and lest I seem to Your Holiness to promise more regarding the usefulness of the work than I can perform, I now pass to the work itself.
[Footnote A: Nicolaus Copernicus was born in 1473 at Thorn in West Prussia, of a Polish father and a German mother. He attended the university of Cracow and Bologna, lectured on astronomy and mathematics at Rome, and later studied medicine at Padua and canon law at Ferrara. He was appointed canon of the cathedral of Frauenburg, and in this town he died in 1543, having devoted the latter part of his life largely to astronomy.
The book which was introduced by this dedication laid the foundations of modern astronomy. At the time when it was written, the earth was believed by all to be the fixed centre of the universe; and although many of the arguments used by Copernicus were invalid and absurd, he was the first modern to put forth the heliocentric theory as "a better explanation." It remained for Kepler, Galileo, and Newton, to establish the theory on firm grounds.]
PREFACE TO THE HISTORY OF THE REFORMATION IN SCOTLAND
BY JOHN KNOX (C. 1566)[A]
To the gentill readar, grace and peace from God the Father of our Lord
Jesus Christ, with the perpetuall encrease of the Holy Spreit.
It is not unknowen, Christeane Reader, that the same clud of ignorance, that long hath darkened many realmes under this accurssed kingdome of that Romane Antichrist, hath also owercovered this poore Realme; that idolatrie hath bein manteined, the bloode of innocentis hath bene sched, and Christ Jesus his eternall treuth hath bene abhorred, detested, and blasphemed. But that same God that caused light to schyne out of darknes, in the multitud of his mercyes, hath of long tyme opened the eis of some evin within this Realme, to see the vanitie of that which then was universally embrased for trew religioun; and hes gevin unto them strenth to oppone[1] thame selfis unto the same: and now, into these our last and moist[2] corrupt dayis, hath maid his treuth so to triumphs amonges us, that, in despyte of Sathan, hipochrisye is disclosed, and the trew wyrshipping of God is manifested to all the inhabitantis of this realme who eis Sathan blyndis not, eyther by thair fylthy lustes, or ellis by ambitioun, and insatiable covetousness, which mack them repung to[3] the power of God working by his worde.
And becaus we ar not ignorant what diverse bruittis[4] war dispersed of us, the professoures of Jesus Christ within this realme, in the begynnyng of our interprise, ordour was tackin, that all our proceidingis should be committed to register; as that thei war, by such as then paynfullie travailled boith by toung and pen; and so was collected a just volume, (as after will appeir,) conteanyng thingis done frome the fyftie-awght[5] year of God, till the arrivall of the Quenis Majestic[6] furth of France, with the which the Collectour and Writtar for that tyme was content, and never mynded[7] further to have travailled in that kynd of writting. But, after invocatioun of the name of God, and after consultatioun with some faythfull, what was thought by thame expedient to advance Goddis glorie, and to edifie this present generatioun, and the posteritie to come, it was concluded, that faythfull rehersall should be maid of such personages as God had maid instruments of his glorie, by opponyng of thame selfis to manifest abuses, superstitioun, and idolatrie; and albeit thare be no great nomber, yet ar thei mo then the Collectour wold have looked for at the begynnyng, and thairfoir is the volume somewhat enlarged abuif his expectatioun: And yit, in the begynnyng, mon[8] we crave of all the gentill Readaris, not to look[9] of us such ane