Why are we obsessed with the things we want only to be bored when we get them? Why is addiction perfectly logical to an addict? Why does love change so quickly from passion to indifference? Why are some people die-hard liberals and others hardcore conservatives? Why are we always hopeful for solutions even in the darkest times — and so good at figuring them out? The answer is found in a single chemical in your brain: dopamine. Dopamine ensured the survival of early man. Thousands of years later, it is the source of our most basic behaviors and cultural ideas—and progress itself. Dopamine is the chemical of desire that always asks for more — more stuff, more stimulation, and more surprises. In pursuit of these things, it is undeterred by emotion, fear, or morality. Dopamine is the source of our every urge, that little bit of biology that makes an ambitious business professional sacrifice everything in pursuit of success, or that drives a satisfied spouse to risk it all for the thrill of someone new. Simply put, it is why we seek and succeed; it is why we discover and prosper. Yet, at the same time, it's why we gamble and squander. From dopamine's point of view, it's not the having that matters. It's getting something — anything — that's new. From this understanding — the difference between possessing something versus anticipating it — we can understand in a revolutionary new way why we behave as we do in love, business, addiction, politics, religion — and we can even predict those behaviours in ourselves and others. 'Meet a molecule whose fingerprint rests upon every aspect of human nature — from desire and drugs to politics and progress. Lieberman and Long tell the epic saga of dopamine as a page-turner that you simply can't put down.' — David Eagleman, PhD, neuroscientist at Stanford and New York Times bestselling author 'Why do we crave what we don't have rather than feel good about what we do — and why do fools fall in love? Haunting questions of human biology are answered by The Molecule of More, a must-read about the human condition.' — Gregg Easterbrook, author of It's Better Than It Looks