The sixteenth century which regarded (as I have tried to show you) bodily illness as much less important than sickness which threatened the soul, organised a system of spiritual preventive medicine. As soon as a child was old enough to spell his first words, he was educated in the true (and the "only true") principles of the Faith. Indirectly this proved to be a good thing for the general progress of the people of Europe. The Protestant lands were soon dotted with schools. They used a great deal of very valuable time to explain the Catechism, but they gave instruction in other things besides theology. They encouraged reading and they were responsible for the great prosperity of the printing trade.