Introduction: No two ways about it: We are making ourselves wretched. We are more affluent than ever, but riches—and power, the only point in having riches—do not make people happy. Ask a psychiatrist. Or take a look at the face of Vladimir Putin, who has, alas, the power of life and death over millions of people and is the owner of the most expensive toilet-paper dispenser in the world. No, affluent as we are, we are also more anxious, depressed, lonely, isolated, and lacking in purpose than ever. Why is this? I suggest it is because we no longer have the foggiest idea what human life is about. Indeed, there is a sense in which we no longer live in a world at all, but exist in a simulacrum of our own making.