Brian Evan Anthony Davies is a British philosopher, Roman Catholic priest, and friar. He is Distinguished Professor of Philosophy, Fordham University, and author of An Introduction to the Philosophy of Religion, now in its fourth English edition, which has been translated into five languages.

Richard Granville Swinburne is an English philosopher. He is an Emeritus Professor of Philosophy at the University of Oxford. Over the last 50 years, Swinburne has been a proponent of philosophical arguments for the existence of God. His philosophical contributions are primarily in the philosophy of religion and philosophy of science. He aroused much discussion with his early work in the philosophy of religion, a trilogy of books consisting of The Coherence of Theism, The Existence of God, and Faith and Reason.