Annotations are what turn a book into a unique object, one that is subject to the intellectual
interests and working demands of its user and that demonstrates ‘the power of the reader
over the writing of another.' (Christian Jacob).
Annotations incorporate it, first and foremost, in a physical and mental library that leaves its mark on the book, whether in the form of references in the margins, bibliographical references or notes from other readings written on the cover pages.
In the Thesaurus locorum communium, a repertoire written for preachers, the reader has supplemented the text with thirty-seven new sections such as those shown here: ira (anger), intercessio, indivia (desire). Their annotations shed light on the contents of the reader’s work library, consisting of the Bible, works by the Early Church Fathers and writings from classical authors. The most used work, appearing a remarkable 146 times, is De pastorali cur by St. Gregory, which was conscientiously read and commented on throughout the sections.