Over the last century, humanity has achieved the impossible by stopping famine, plague and war. For the first time in history, more people die from obesity than from hunger, and they are more likely to take their own life than to die in a war or a terrorist attack. What will happen to democracy when Google and Facebook come to know our tastes and political preferences better than we know ourselves? What will happen to the welfare state when artificial intelligence drives individuals out of the labor market, creating an “unnecessary class” of humans? How can we deal with advances in genetic engineering? Will Silicon Valley end up establishing new religions instead of focusing solely on producing smart devices? Homo Deus explores the projects, dreams and nightmares that will shape the 21st century: from overcoming death to the creation of intelligence and artificial life.