Today, many people wonder whether they are truly Christians. Others wish to rediscover faith and are seeking a path toward it. Kurt Flasch (born 1930)—a scholar of ancient and medieval philosophy—presents a reasoned explanation of why he is not a Christian. His critique is directed at Christian doctrine, rather than the state of the Churches. Drawing on primary sources, Flasch analyzes both Catholic and Protestant versions of Christian doctrine and explains why he can no longer embrace them. This book offers valuable insights for both believers and non-believers alike.