Having virtual sex is the same as being unfaithful? How far would you go in interrogating a prisoner of war if you knew that torturing him would save millions of lives? Is it right to punish someone for a crime that we know for certain he will commit? What is the nature of reality? What divides what is right from what is wrong? Can we truly say we know something?With his amusing “mental experiments”, Julian Baggini offers us the opportunity to explore the solutions of important moral questions taken from the history of philosophy but also from everyday life. From Zeno’s paradox to The Minority Report, from the eternal return of Nietzsche to An American Werewolf in London, by way of Hobbes and Star Trek: he uses television, literature and common sense to remind us that philosophy is not just for field experts, but that it springs from daily life problems and involves all of us.