Did Einstein have autism? Was Frank Lloyd Wright a narcissist? And did Marilyn Monroe suffer from borderline personality disorder? In this surprising and meticulously researched look at the evolution of mental health, Claudia Kalb examines historic figures through the lens of modern psychology, crafting biographical narratives that are sympathetic and astute. From George Gershwin's ADHD to Charles Darwin's anxiety, Kalb provides insight into a broad range of maladies, and considers the difficulty of arriving at a correct diagnosis—if one is even needed at all.