Andrew Brenner

Thomas Aquinas, along with many other medieval philosophers, believed that God is timeless. Aquinas’s treatment of this doctrine seems to imply a view of time that some commentators have noticed is inescapably tenseless, what we would now call a “B-theory” view of time. This is problematic because Aquinas also seems to affirm that tense and temporal becoming are real, implying that what we would now call an “A-theory” of time is correct. In this essay I attempt to adjudicate this apparent conceptual tension in Aquinas’s thought. After analyzing some of the relevant passages I conclude that these passages inescapably, though perhaps inadvertently, commit Aquinas to what is fundamentally a B-theoretic notion of time. I move on to criticize some philosophers’ attempts to reconcile Aquinas’s treatment of divine timelessness with the A-theory. I argue that all these attempts are unsuccessful. I conclude with what I believe are the implications of my interpretation of Aquinas for his broader system of philosophy.

Mereological nihilism is the thesis that composition never occurs. Some philosophers have thought that science gives us compelling evidence against nihilism. In this article I respond to this concern. An initial challenge for nihilism stems from the fact that composition is such a ubiquitous feature of scientific theories. In response I motivate a restricted form of scientific anti-realism with respect to those components of scientific theories which make reference to composition. A second scientifically based worry for nihilism is that certain specific scientific phenomena might require ineliminable quantification over composite objects. I address these concerns, and argue that there seem to be nihilist-friendly construals of the scientific phenomena in question.