Throughout history, progress has never been born from peace-it has been forged in the fires of rivalry. From the laboratories of Tesla and Edison to the studios of Picasso and Van Gogh, from the debates of Newton and Einstein to the boardrooms of Apple and Microsoft, Rivals of Genius unveils the dramatic duels that shaped our civilization. Each confrontation between brilliant minds and ambitious leaders became a crucible of innovation-proving that the world's greatest leaps forward often begin with a clash of ideas, egos, and visions. Blending vivid storytelling with historical insight, Julian Crossfield explores how conflict has been the hidden engine of human progress. Across science, art, politics, and technology, he traces the extraordinary relationships that turned competition into creation and adversity into advancement. Through these epic face-offs, Rivals of Genius asks a profound question: Is rivalry humanity's most powerful force for change-or its most dangerous temptation? From the sparks of the Renaissance to the dawn of artificial intelligence, this sweeping narrative reveals how our fiercest battles have built the modern world-and how understanding them can illuminate the future of innovation, leadership, and the human spirit itself.