The Kalam Cosmological Argument, Volume 1: Philosophical Arguments for the Finitude of the Past

This edited volume presents a comprehensive defense of the philosophical foundations underlying the Kalam cosmological argument, specifically focusing on establishing that the past cannot be infinite. Sinclair assembles contributions from leading philosophers who advance various lines of reasoning against an eternal past, thereby supporting the argument's crucial second premise that the universe began to exist.

The collection systematically addresses the philosophical case for temporal finitude through multiple approaches. Contributors examine classical paradoxes associated with actual infinities, particularly as they relate to temporal sequences. The volume explores whether an actually infinite series of past events generates genuine metaphysical impossibilities or merely counterintuitive results. Special attention is given to defending the coherence of tensed theories of time, which many contributors argue are necessary for the Kalam argument's success against B-theoretic objections that would dissolve the notion of temporal becoming.

The work engages critically with contemporary defenders of past eternalism, including Graham Oppy and Wes Morriston, who have challenged both the possibility and necessity of demonstrating temporal finitude. Contributors respond to objections that mathematical infinities can be consistently applied to temporal sequences without generating contradictions. The volume also addresses the charge that arguments against infinite pasts prove too much, potentially ruling out an infinite future or God's eternal existence.

Methodologically, the collection employs rigorous analytical philosophy while remaining accessible to non-specialists interested in natural theology. The contributors draw on developments in philosophy of mathematics, particularly regarding the nature of infinity, as well as contemporary debates in philosophy of time. Several chapters examine the historical development of arguments against infinite pasts, tracing their roots through Islamic philosophy and showing how modern formulations have responded to evolving objections.

The volume's significance lies in consolidating and advancing philosophical arguments that serve as one pillar of the Kalam cosmological argument, alongside scientific evidence from cosmology. By focusing exclusively on philosophical considerations, the work demonstrates that the case for temporal finitude need not depend solely on empirical findings about cosmic origins. This philosophical independence strengthens the overall Kalam argument by providing multiple, mutually reinforcing routes to its key premise. The collection thus contributes to contemporary natural theology by defending the rational credibility of creation ex nihilo through purely philosophical argumentation.