In this hour of In the Market, host Janet Parshel invites Dr. Bradley Sickler, a professor of philosophy and author of God on the Brain, to examine a question that has occupied scientists and theologians alike: is belief in God a natural, evolutionary by‑product, or does it point to a deeper, divine reality?

What the Brain Tells Us About Belief

Dr. Sickler explains that the cognitive science of religion (CSR) seeks to map the mental mechanisms that give rise to religious ideas. He distinguishes two broad lines of thought. Adaptationists argue that belief in a higher power evolved because it conferred a survival advantage—perhaps by fostering group cohesion or encouraging prosocial behavior. Non‑adaptationists, on the other hand, see religious belief as a by‑product of other evolved faculties, such as the human tendency to detect agency in ambiguous situations.

The Soul as a Bridge Between Matter and Meaning

Central to the conversation is the soul. Dr. Sickler describes it not as a random artifact but as a “GPS” that aligns human experience with a divine purpose. He contrasts this view with the idea that the soul is merely a by‑product of complex neural networks, and he asks whether the soul can be reduced to brain chemistry. The discussion keeps the door open for a theological interpretation while still engaging with scientific inquiry.

Moral Intuition and the Question of Design

When evolutionary explanations for morality are presented, Dr. Sickler points out that natural selection alone cannot account for the universal sense of right and wrong that transcends cultures. He invites listeners to consider whether moral intuition is evidence of a higher design or merely a social construct. The conversation highlights the tension between a purely naturalistic account of ethics and one that acknowledges a divine moral lawgiver.

These moments only hint at the depth of Dr. Sickler’s book and the broader dialogue between faith and reason. To hear how he weaves together science, philosophy, and theology, tune into the full episode of In the Market on October 20, 2026.