Thesis advisor: Jean-Luc Solère / This dissertation examines the noetics of several early thirteenth-century Latin Augustinian thinkers, who first received Aristotle's noetic from the Arabs, examining in detail the early Latin reception of Aristotelian proposal that human thought is caused by the `agent intellect'. I argue that the early Latin-Augustinian reactions to the Arab noetics reveal an abiding Latin commitment to a concept of selfhood in natural thought. For different reasons, these early 13th century Latin thinkers explicitly locate the principle of natural thought within the individual's soul, thus conceiving the individual as the spontaneous origin of the activity of his or her thinking. I propose that there is a progressively more refined development of this concept within the interpretation of the Peripatetic noetic proposed within the early 13th century Franciscan school. I trace this development through John of La Rochelle to the anonymous author of the Summa Fratris Alexandri Book 2 to Bonaventure's early thought. At the same time, I analyze this Franciscan development relative to William of Auvergne's well-conceived opposition to all interpretations of the Aristotelian noetic. I make the case that William's critique sets the standard for the noetic of the individual to which these Franciscans adhere, even in their adoption of the Aristotelian noetic. I then argue that to adhere to William's standard, these Franciscans drew on Averroes' account of the agent intellect as found in Averroes' Commentarium Magnum in Aristotelis De Anima Libros. Finally, I argue that within the early 13th century's development of the noetic of the individual, there is an important, self-conscious development of the historico-philosophical concept of the Western self. / Thesis (PhD) — Boston College, 2012. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Philosophy.