A captivating history of obsessive collectors: from ancient looters and idolaters to fin de siècle decadents, Freudian psychos, and hoarders.

Collectors are often praised for their taste in art or contributions to science, but there can be a darker side: their passion is sometimes driven by dangerous obsession. Roman emperors who lusted after statues; Chinese scholars obsessed with rocks and flowers; fin de siècle dandies surrounded by bibelots. History is full of stories about those who love things more than people, presenting a danger either to themselves or others.

In this sweeping history from antiquity to today, James Delbourgo tells the extraordinary story of the mad collector as a cultural figure from the tyrant and idolater to the sexually repressed "psycho" of the Freudian imagination and the modern-day hoarder. His conclusion is surprising: Because they are driven by passion rather than profit, obsessive collectors also have been cultural heroes, seen as authentic and true to themselves. Some may be mad, but theirs is a noble madness.