Miracles

Lewis wrote this philosophical defense of the supernatural in response to the scientific materialism that dominated intellectual discourse in the mid-twentieth century. As Darwin's theories and modern physics reshaped how educated people understood the natural world, many concluded that miracles were simply impossible—relics of pre-scientific thinking that rational people must abandon. Lewis, then a professor at Oxford and recently converted to Christianity, entered this debate not as a theologian but as a logician trained in medieval and Renaissance literature, bringing philosophical rigor to questions that many treated as settled.

The work proceeds through two major arguments. First, Lewis attacks naturalism itself, contending that if human reason is merely the product of mindless evolutionary processes, then we have no grounds for trusting it to deliver truth about anything—including naturalism itself. This self-refuting quality, he argues, opens space for acknowledging that mind and reason point beyond the purely material. Second, he defines miracles not as violations of natural law but as instances where a higher kind of nature—the supernatural—feeds new events into the natural system. God does not break the laws of physics but introduces new initial conditions that then unfold according to those very laws. Lewis examines the central Christian miracle, the Incarnation, as the hinge upon which other Gospel miracles turn, arguing that if God truly entered history in Christ, then the accompanying signs follow logically.

The book endures because Lewis anticipated objections that remain current: that science has explained away the need for God, that educated people cannot believe in miracles, that faith and reason occupy separate spheres. His argument that naturalism cannot account for the reliability of human reasoning continues to influence philosophers of mind and religion. Who should read this: Those encountering intellectual challenges to Christian faith, particularly from scientific materialism, and readers comfortable with sustained philosophical argument. This is not devotional reading but apologetics that demands careful attention to logical steps.