Cause and Cosmology: A Debate about Atheism and Theism

This volume presents a philosophical debate between Quentin Smith and William Lane Craig concerning the cosmological argument for God's existence, with Smith defending atheism and Craig defending theism. The work centers on whether contemporary cosmology, particularly Big Bang theory, provides evidence for or against divine creation. Smith argues that modern physics demonstrates the universe began to exist without cause, while Craig maintains that any beginning requires a transcendent cause, namely God.

Smith's position rests on quantum mechanical interpretations of the universe's origin. He contends that the initial singularity represents an uncaused quantum event, analogous to radioactive decay or virtual particle production in quantum field theory. Drawing on the Hartle-Hawking model and quantum gravity theories, Smith argues that the universe's emergence from nothing violates no physical laws and requires no divine explanation. He systematically addresses Craig's premise that whatever begins to exist must have a cause, arguing this principle lacks empirical support at quantum scales and represents an unjustified extrapolation from everyday experience.

Craig responds by defending the kalam cosmological argument's metaphysical foundations. He distinguishes between efficient causation and material causation, arguing Smith conflates the two. While quantum events may lack determining causes, Craig maintains they still occur within pre-existing spacetime frameworks, unlike the absolute beginning of spacetime itself. He challenges Smith's interpretation of quantum cosmology, arguing that mathematical models describing the universe's wave function still presuppose metaphysical questions about why anything exists rather than nothing.

The debate exemplifies contemporary natural theology's engagement with cutting-edge physics. Both authors demonstrate sophisticated understanding of cosmological models, from inflationary theory to quantum tunneling scenarios. Their exchange illuminates fundamental disagreements about causation, necessity, and explanation in modern physics and metaphysics. Smith represents a naturalistic approach that sees physics as self-sufficient for explaining existence, while Craig exemplifies a philosophical theology that interprets scientific findings within broader metaphysical frameworks.

This work significantly advances discussions about science-religion dialogue by moving beyond superficial conflicts to examine precise philosophical implications of physical theories. The debate format allows readers to assess competing interpretations of the same scientific data, revealing how worldview commitments influence theoretical preferences. The volume serves as an essential reference for understanding how contemporary cosmology factors into classical arguments about God's existence.