Isatis herba

is now grazed by caterpillars, now gnawed by worms, now attacked by spiders and other insects, so the Church of God is now cruelly assailed by hypocrites, now by heretics, now by tyrants. One could not inconveniently adapt these and other infinite things to the Church of God. And for that reason, I consider such knowledge to be pleasant, and even for the theologian, useful and primarily necessary. Although by this commemoration I in no way support those who, in the meantime neglecting the tools of their own workshop, leap over the limits of their own vocation and rush into another profession, meanwhile boasting of a vain knowledge of the art of medicine, the beginnings of which they have not even tasted, such as many are now, who attempt to drive away a hundred diseases with a single remedy or experiment, making no small gain. But I want these things to be understood only concerning the knowledge of physical or natural things. If from this, those things which seem to serve our