It is a commonplace to say that Augustine of Hippo is the greatest of the Fathers of the Latin Church. It is no less a commonplace to assert that Isidore of Seville is the most important author of the writers of Visigothic Spain. If we add that Isidore expresses the greatest admiration for Augustine, that he quotes him in all his works, without exception, and that he knows more than 50 of his works, we might expect that the links between these two giants have already been widely studied. In fact, if we except some specific studies, Augustine's presence in Isidore has almost never been studied, probably because researchers have been discouraged by the magnitude of the task. It was only in 2013 that José Carlos Martín-Iglesias published two major studies on the subject; but, despite their richness, they are very brief (four pages each). There is still much to be done. José Carlos Martín-Iglesias has nonetheless achieved an essential task: he has cleared a huge field of research that is still almost virgin. My work aims to continue this clearing. I would like to complete and specify the list of Augustine's works known to Isidore, and I would also like to outline some unexpected aspects of Isidore's use of his predecessor.

Augustine's works known to Isidore: Some additions

I shall begin with the list of Augustine's works known to Isidore, taking as a starting point José Carlos Martín-Iglesias's list.