In 2007, Christopher Hitchens, Richard Dawkins, Sam Harris, and Daniel Dennett filmed a landmark discussion about modern atheism. The video went viral. Now, the transcript of their conversation is illuminated by new essays from three of the original participants and an introduction by Stephen Fry.

In this explosive new book, Sam Harris tears down the wall between scientific facts and human values, arguing that most people are simply mistaken about the relationship between morality and the rest of human knowledge. Harris urges us to think about morality in terms of human and animal well-being, viewing the experiences of conscious creatures as peaks and valleys on a "moral landscape".

A belief in free will touches nearly everything that human beings value. It is difficult to think about law, politics, religion, public policy, intimate relationships, morality—as well as feelings of remorse or personal achievement—without first imagining that every person is the true source of his or her thoughts and actions. And yet the facts tell us that free will is an illusion.

As it was in Anna Karenina, Madame Bovary, and Othello, so it is in life. Most forms of private vice and public evil are kindled and sustained by lies. Acts of adultery and other personal betrayals, financial fraud, government corruption - even murder and genocide - generally require an additional moral defect: a willingness to lie. In Lying, bestselling author and neuroscientist Sam Harris argues that we can radically simplify our lives and improve society by merely telling the truth in situations where others often lie.

A Therapeutic Journey follows the arc from mental crisis and collapse, to convalescence and recovery. Written with kindness, knowledge and sympathy, it is both a practical guide and a source of consolation and companionship in what might be some of our loneliest, most anguished moments.