Avicenna's proof for the existence of God (the Necessary Existent) in the Metaphysics of the Salvation relies on the claim that every possible existent shares a common cause. I argue that Avicenna has good reason to hold this claim given that he thinks that (1) every essentially ordered causal series originates in a first, common cause and that (2) every possible existent belongs to an essentially ordered series. Showing Avicenna's commitment to 1 and 2 allows me to respond to Herbert (...) Davidson's and Richard Swinburne's claim that Avicenna's proof for the Necessary Existent is incomplete and fallacious -/- . (shrink)

The last thirty years of scholarship in western medieval philosophical historiography have seen a number of reflections on the methodological paradigms, schools, trends, and dominant approaches in the field. As a contribution to this ongoing assessment of the existing methods of studies in medieval philosophy and theology and a supplement to classifications offered by M. Colish, J. Inglis, C. König-Pralong, J. Marenbon, A. de Libera, and others, the article offers another explanatory tool. Here is a description of an imaginary system (...) of methodological coordinates that systematizes the current tendencies by placing them in a three-dimensional system of axes. Every axis corresponds to a certain aspect of the historical and systematic research in medieval thought and symbolizes a possible movement between two extremes representing opposite methodological values and directions. The methods and approaches practiced in recent studies in medieval philosophy and theology might be schematically located inside this general system of argumentational, focal (or objectival), and (con)textual axes with their intersection identified with what some scholars call the “integral” model of study. This explanatory tool allows one to see how current approaches and methods form a panoply of axes that belong together in one complex grid and helps to visualize the tapestry of existing approaches in medieval philosophical historiography. (shrink)

This paper explores Thomas Aquinas’ and Richard Swinburne’s doctrines of simplicity in the context of their philosophical theologies. Both say that God is simple. However, Swinburne takes simplicity as a property of the theistic hypothesis, while for Aquinas simplicity is a property of God himself. For Swinburne, simpler theories are ceteris paribus more likely to be true; for Aquinas, simplicity and truth are properties of God which, in a certain way, coincide – because God is metaphysically simple. Notwithstanding their different (...) approaches, some unreckoned parallels between their thoughts are brought to light. (shrink)

First it is argued that the linkage of natural theology to epistemology is invalid historically, epistemologically and metaphysically. Second it is argued that knowledge claims about the ultimate cause of everything should be evaluated not in terms of justified true belief but in terms of the intellectual virtue of wisdom.

In deze bijdrage worden twee alternatieve visies op de verhouding van geloof en weten geschetst aan de hand van twee middeleeuwse denkers: Bernardus van Clairvaux en Thomas van Aquino. De auteur betoogt dat zowel de ‘rationalistische’ positie van Thomas van Aquino als de ‘anti-rationalistische’ positie van Bernardus van Clairvaux beide, geloof en rede, als op waarheid betrokken zien, waarmee zicht wordt geboden op het wijsgerige belang van dit vermeende anti-rationalisme.

Alvin Plantinga’s theory of knowledge, as developed in his Warrant trilogy, has shaped the debates surrounding many areas in epistemology in profound ways. Plantinga has received his share of criticism, however, particularly in his treatment of belief in God as being “properly basic”. There has also been much confusion surrounding his notions of warrant and proper function, to which Plantinga has responded numerous times. Many critics remain unsatisfied, while others have developed alternative understandings of warrant in order to rescue Plantinga’s (...) theory from certain objections. The most promising of such attempts fall under the broad category of “virtue epistemology” or a “virtue-theoretic” approach. The work being done in virtue epistemology is still in its early stages and a consensus on what actually constitutes virtue epistemology has yet to be reached. While some have attempted to structure an entire theory of knowledge based on the virtues possessed by the knower, others have focused more on the role of epistemic virtues as an attempt to supplement existing theories, including Plantinga’s. In this paper, I will offer an analysis of what such an attempt might look like and evaluate the potential success of broadening Plantinga’s original model. -/- My proposal is that certain features of a virtue-theoretic approach (also referred to as “agent-reliabilism”) could improve Plantinga’s model in significant ways. Not only would such a broadened approach be better equipped to handle common objections, but it would also be better suited to contribute an enhanced understanding of the task of epistemology, one that seeks to discover multiple epistemic goods other than what has been traditionally confined to the realm of knowledge. I conclude by applying this approach to Plantinga’s treatment of theistic belief in Warranted Christian Belief and by articulating a few of the ways in which epistemic virtues can increase the degree of warrant enjoyed by such belief. (shrink)