Meanwhile Galileo was prosecuting his studies at Florence. In May, 1609, he made his first telescope and pointing it toward the heavens saw the satellites of Jupiter and the phases of Venus. These were two of the weightiest arguments that had as yet been presented in favor of the Copernican theory. Already Galileo began to encounter vulgar indignation which accused him of impiety. In 1611, Galileo publicly exhibited the spots upon the sun. This only excited the rage of his persecutors. Goaded by opposition he wrote a letter, in 1613, to the Abbe Castelli, showing that the scriptures were given for our salvation, and not to teach astronomy in particular. This was repeating Bruno's offense. Galileo was brought before the Inquisition, and, after years of imprisonment, only saved his life by denying the great truths he had discovered. He died 1642, in the seventy-eighth year of his age, the prisoner of the Inquisition. But religious bigotry did not end there. It tried to follow him beyond the grave, disputing his right to make a will and denying him burial in consecrated ground. Nor were the leaders of the Protestant cause less bitter. In reference to Copernicus, Luther declared, "People give ear to an upstart astrologer, who strives to show that the earth revolves;" and again, "This fool (Copernicus) wishes to reverse the whole system of astronomy." Melancthon, in his treatise _Initia Doctrinea Physicae_, says, "The eyes are the {31} witnesses that the heavens revolve about the earth in the space of twenty-four hours," and adds, "Now it is a want of decency to assert publicly the notions of Copernicus;" and Zwingle declares, "The earth can be no where, if not in the center of the universe. It is a part of a good mind to accept the truth as revealed by God, and acquiesce in it." (_See Geschichte des Materialismus, Vol. I, page_ 217.) [ILLUSTRATION: BURNING OF SERVETUS.] Further, Calvin proved the darkness of his own mind when he put to death that celebrated philosopher and physician, Michael Servetus, whose greatest crimes were that in religion he denied the absurd dogma that the Father, Son and Holy Spirit are three separate and distinct beings and yet one and the same person; and in science he had partially succeeded in discovering the circulation of blood. The circumstances were also of the {32} most atrocious character. Servetus was roasted for two hours in the flames of a slow fire made of green wood. Meanwhile he was begging for the love of God that they would put on more wood or do something to end his torture.