Douglas Groothuis is professor of philosophy at Denver Seminary. He is the author of numerous books, including Philosophy in Seven Sentences, Unmasking the New Age, Truth Decay, On Pascal, On Jesus, and Walking Through Twilight: A Wife's Illness-A Philosopher's Lament.
As a full-time voice talent and Audie-nominated audiobook narrator, Lyle Blaker has narrated nearly 100 audiobook titles, as well as countless hours of e-learning narration for major companies. He is known for his warm, friendly, and approachable narration style.