What would remain of art if we eliminated the madness that, along with inspiration, curiosity, and transgression, is a fundamental element of the creative process? From Hieronymus Bosch to Vincent van Gogh, from Ernest Hemingway and Virginia Woolf to Salvador Dalí and Robert Schumann, Ramón Gener traverses the history of art, literature, and music to reveal the small and large follies hidden behind immense masterpieces.