How do we prove the existence of God? Tackling this question, this text examines a cross-section of theistic proofs, offered by thinkers from Anselm to Paley, explaining what theistic proofs are and what they try to accomplish. It also explains the relationship between proofs and religious realism, examines the cosmological and teleological arguments, the position known as foundationalism and the argument from religious experience. The book includes section on how proofs go wrong and the laternatives to theistic proofs.