The Four Horsemen

Richard Dawkins is author of The Selfish Gene, voted The Royal Society's Most Inspiring Science Book of All Time, and also the bestsellers The Blind Watchmaker, Climbing Mount Improbable, The Ancestor's Tale, The God Delusion, and two volumes of autobiography, An Appetite for Wonder and Brief Candle in the Dark. He is a Fellow of New College, Oxford and both the Royal Society and the Royal Society of Literature. In 2013, Dawkins was voted the world’s top thinker in Prospect magazine’s poll of 10,000 readers from over 100 countries.

Sam Harris is the author of five New York Times bestsellers. His books include The End of Faith, Letter to a Christian Nation, The Moral Landscape, Free Will, Lying, and Waking Up. The End of Faith won the 2005 PEN/Martha Albrand Award for Nonfiction. His work has been published in more than twenty languages. Harris has written for the New York Times, the Los Angeles Times, the Economist, The Times, the Boston Globe, the Atlantic, Annals of Neurology, and other outlets. He received a degree in philosophy from Stanford University and a PhD in neuroscience from UCLA. Please visit his website at SamHarris.org.

Daniel C. Dennett is the University Professor and Austin B. Fletcher Professor of Philosophy at Tufts University. He is the author of numerous books including Intuition Pumps and Other Tools for Thinking, Breaking the Spell, Darwin's Dangerous Idea, and Consciousness Explained.

Christopher Hitchens was an English-born American author, journalist and literary critic. He was a columnist at Vanity Fair, The Atlantic, World Affairs, The Nation, Slate, Free Inquiry, and a variety of other media in a career that spanned more than four decades and made him a prominent public intellectual, and a staple of talk shows and lecture circuits. His books include The Monarchy; Blood, Class, and Nostalgia; No One Left to Lie Toand God Is Not Great. He died in 2011.