 Perhaps the most central element of Gregory of Rimini’s thought and influence is his adherence to Augustine and the nature of that adherence. For one thing, Gregory simply read Augustine more carefully and extensively than most previous thinkers, and so, for example, Gregory was able to attack Peter Auriol for his faulty citations and quotations of Augustine. Gregory’s interest in the works of Augustine has been seen as central to the development of a “historico-critical” method in philosophical theology, especially in the Augustinian Order, partly foreshadowing modern scholarly methods. In connection with this historico-critical method, Gregory was part of a general attempt to establish reliable texts of Augustine and to separate authentic works from the pseudo-Augustinian corpus. Quotations from Augustine, moreover, were cited with great accuracy and detail in Gregory’s writings, and so his Sentences commentary, when not plagiarized for his own ideas, was often used as a source for Augustinian quotations (Trapp 1956).