Abstract

This dissertation is an investigation of ontological priority. The Introduction argues that although philosophers have often been concerned with the things that are ontologically prior, they have seldom addressed the question of what ontological priority is. ;Part One gives a detailed analysis of what ontological priority is. Chapter 1 notes that there are two competing theories available: according to the first, ontological priority is a dependence relation; according to the second, it is a degrees-of-being relation. Since the two views are in themselves irreconcilable and since there are no good grounds for choosing between them, it is better to find a "higher" theory that encompasses both of them. Chapter 2 lays the groundwork for the development of this "higher" theory by examining the Scotistic notion of "essential order", a notion that includes the two relations that have been called 'ontological priority' as noted in Chapter 1. Chapter 3 adapts Scotus's understanding of essential order to formulate a definition of ontological priority. The definition does not define just one relation; rather, it gives membership criteria for an entire class of "ontological priority relations". ;Part Two examines some of the members of the class of ontological priority relations. Chapter 4 examines dependence and concludes three things: first, that the received understanding of dependence is incorrect; second, that dependence properly understood is an ontological priority relation; third, that the relation that is usually thought to be dependence is also an ontological priority relation. Chapter 5 examines degrees-of-being. Since the question of what degrees-of-being is is too complicated to deal with in the context of the dissertation, the chapter examines several theories and shows that degrees-of-being is an ontological priority relation according to any of the theories. ;The Conclusion shows some relations among the three ontological priority relations discussed in Part Two. It also shows briefly how the concept of ontological priority relations can be used to talk about the orderings of the universe. Finally, it points the way to further investigation.