Knowing that I have confuted the Ptolemaic and Aristotelian arguments, and distrusting their defence in the field of philosophy, they have tried to shield their fallacies under the mantle of a feigned religion and of scriptural authority, and have endeavoured to spread the opinion that my propositions are contrary to the Scriptures, and therefore heretical. To this end they have found accomplices in the pulpits, and have scattered rumours that my theory of the world-system would ere long be condemned by supreme authority. Further, they have endeavoured to make the theory peculiar to myself, ignoring the fact that the author, or rather restorer, of the doctrine was Nicholas Copernicus, a Catholic, and a much-esteemed priest, who was summoned to Rome to correct the ecclesiastic calendar, and in the course of his inquiries reached this view of the universe. The calendar has since been regulated by his doctrine, and on his principles the motions of the planets have been calculated. Having reduced his doctrine to six books, he published them under the title of "De Revolutionibus Coelestibus," at the instance of the Cardinal of Capua, and of the Bishop of Culma; and, since he undertook the task at the order of Pope Leo X., he dedicated the work to his successor Paul III., and it was received by the Holy Church and studied by all the world. In the end of his dedicatory epistle Copernicus writes: "If there should chance to be any mateologists who, ignorant in mathematics yet pretending to skill in that science, should dare, upon the authority of some passage of Scripture wrested to their purpose, to condemn and censure my hypothesis, I value them not, and scorn their inconsiderate judgment. For it is not unknown that Lactantius (a famous author though poor mathematician) writes very childishly concerning the form of the earth when he scoffs at those who affirm the earth to be in form of a globe. So that it ought not to seem strange to the intelligent if any such should likewise now deride us. The mathematics are written for mathematicians, to whom (if I deceive not myself) these labours of mine shall seem to add something, as also to the commonweal of the Church whose government is now in the hands of Your Holiness." It is such as Lactantius who would now condemn Copernicus unread, and produce authorities of the Scripture, of divines, and of councils in support of their condemnation. I hold these authorities in reverence, but I hold that in this instance they are used for personal ends in a manner very different from the most sacred intention of the Holy Church. I am ready to renounce any religious errors into which I may run in this discourse, and if my book be not beneficial to the Holy Church may it be torn and burnt; but I hold that I have a right to defend myself against the attacks of ignorant opponents.