This episode explores the rationality of belief, beginning with the philosophical challenge of solipsism – the idea that only one's own mind is certain to exist. We argue that acknowledging one's own mortality necessitates accepting a reality beyond individual consciousness, leading to the need for foundational beliefs in an external world, other minds, language, and causality. We then asserts that the most rational foundation for these beliefs is the existence of a divine agency, presenting arguments from contingency, design, reason, morality, and beauty.