This chapter examines the philosophical foundations of belief in scientific theories, emphasizing that belief is not synonymous with truth and evolves with new evidence. It discusses the distinctions between science and religion, the implications of moral anti-realism, and the complex relationships between quantum mechanics and morality. The chapter also delves into the intricacies of gravitational forces, cosmology, and the nature of existence, offering insights into the interplay of evidence and belief in shaping our understanding of the universe.