In this enchanting book, Nobel Prize-winning physicist Giorgio Parisi guides us through his work, beginning with an investigation into the sophisticated flight patterns of starlings. Studying these birds, he realised, proves an illuminating way into understanding complex systems of all kinds — from atoms to planets to human societies. Parisi reflects on the lessons from a lifetime in pursuit of scientific truth: the importance of serendipity, the surprising kinship between physics and other disciplines, and the value of science to society. Part elegant scientific treatise, part thrilling intellectual journey.