Note 259 — Chapter XIII · THE RISE OF MODERN FREETHOUGHT—(Continued)

The fashion in which Galileo’s sidereal discoveries were met is indeed typical of the whole history of freethought. The clergy pointed to the story of Joshua stopping the sun and moon; the average layman scouted the new theory as plain folly; and typical schoolmen insisted that “the heavens are unchangeable,” and that there was no authority in Aristotle for the new assertions. With such minds the man of science had to argue, and in deference to such he had at length to affect to doubt his own demonstrations.259 The Catholic Reaction had finally created as bitter a spirit of hostility to free science in the Church as existed among the Protestants; and in Italy even those who saw the moons of Jupiter through his telescope dared not avow what they had seen.260 It was therefore an unfortunate step on Galileo’s part to go from Padua, which was under the rule of Venice, then anti-papal,261 to Tuscany, on the invitation of the Grand Duke. When in 1613 he published his treatise on the solar spots, definitely upholding Copernicus against Jesuits and Aristotelians, trouble became inevitable; and his letter262 to his pupil, Father Castelli, professor of mathematics at Pisa, discussing the Biblical argument with which they had both been met, at once evoked an explosion when circulated by Castelli. New trouble arose when Galileo in 1615 wrote his apology in the form of a letter to his patroness the Dowager Grand Duchess Cristina of Tuscany, extracts from which became current. An outcry of ignorant Dominican monks263 sufficed to set at work the machinery of the Index,264 the first result of which (1616) was to put on the list of condemned books the great treatise of Copernicus, published seventy-three years before. Galileo personally escaped for the present through the friendly intervention of the Pope, Paul V, on the appeal of his patron, the Grand Duke of Tuscany, apparently on the ground that he had not publicly taught the Copernican theory. It would seem as if some of the heads of the Church were at heart Copernicans;265 but they were in any case obliged to disown a doctrine felt by so many others to be subversive of the Church’s authority.