One of the most influential physicists of our time, Stephen Hawking touched the lives of millions. Recalling his nearly two decades as Hawking’s collaborator and friends, Leonard Mlodinow brings this complex man into focus in a unique and deeply personal portrayal. We meet Hawking the genius, who pours his mind into uncovering the mysteries of the universe—ultimately formulating a pathbreaking theory of black holes that reignites the discipline of cosmology and paves the way for physicists to investigate the origins of the universe in completely new ways.