James W. Sire (1933–2018) was a widely-respected apologist, author, and lecturer who served for more than thirty years as senior editor at InterVarsity Press. He is the author of more than twenty books, including The Universe Next Door, Apologetics Beyond Reason, Beginning with God, Habits of the Mind, Naming the Elephant, and A Little Primer on Humble Apologetics.
Francis A. Schaeffer (1912–1984) was a pastor, theologian, and speaker with an international ministry who became one of the most influential figures in American evangelicalism during his lifetime. With his wife, Edith, he founded the L'Abri Fellowship in Switzerland. He was the author of many books, including Escape from Reason and How Should We Then Live?, which have sold millions of copies worldwide.