Contributor(s): Professor John Gray | The world has entered a period of crisis and upheaval in which the ideologies of the past give little guidance. How did it reach its present condition? Is there a pattern of thinking that has led governments to make systematic errors? In conversation with Richard Reeves, John Gray will ask what went wrong and what we can expect in future. John Gray is Emeritus Professor of European hought at the LSE and author of Gray's Anatomy. Richard Reeves is Director of the think-tank Demos.