In this week's Book Club podcast I'm joined by the philosopher, scientist and broadcaster Sam Harris - host of the hugely popular Making Sense podcast. Sam's new book is a selection of edited transcripts of the very best of his conversations from that podcast with intellectual eminences from Daniel Kahneman to David Deutsch, and explores some of the issues that preoccupy him most: to do with consciousness, human cognition, artificial intelligence and the political spaces in which these subjects come to bear. He tells me why civilised conversation is what the world needs now more than ever, why 'cancel culture' is real and J.K. Rowling's trans-rights-activist opponents are 'insane', how 'bad philosophy' has ruined the social sciences, the circumstances under which totalitarianism might be okay - and why, as a liberal, he thinks the left is in danger of destroying America.