The Subject of this Study lends itself to a threefold interpretation: it can refer to the books which Zumárraga himself wrote, or to the books which he edited and published, or to those which made up his library, in all probability the first library that existed in New Spain. However it be taken, a study of “The Books of Zumárraga” will give us a glimpse of one of the objects of the invincible zeal that inspired him in his broad vision of his duties as bishop and missionary, as the guide of souls and the father of his flock, occupied with all the necessities of the natives that dwelt within the immense territories comprised in his diocese.
In fact, the constitutive elements of his diocese were two: the conquerors and the conquered. The former, as was to be expected, had their full share of the spiritual defects which the lower nature of any army on active service seems all too prone to exhibit. These faults became even worse among the conquistadores of Mexico when their active service was done and they began to lead a soft, idle life that in many cases incited all their concupiscences.