A thoughtful historian tells us that, between the Middle Ages and the nineteenth century, Italy produced three great men. As the first of these, he names Machiavelli, who he says, "taught the world to understand political despotism and to hate it"; as the second, he names Sarpi, who "taught the world after what manner the Holy Spirit guides the Councils of the Church"; and as the third, Galileo, who "taught the world what dogmatic theology is worth when it can be tested by science."