In Tune was live from the Sage Gateshead to kick off Radio 3's Free Thinking Festival, with Sean Rafferty speaking to a number of musicians and speakers from across the weekend. In this podcast Sean talks to Karen Armstrong, one of the world’s leading thinkers about religion. Karen gave this year's the Free Thinking Lecture, arguing that, in the current global situation, a recognition of how little we know is the only way to peace.