Indice: Introduction / Marco Malvaldi. Pt. 1. / Domenico Laurenza: 1. Birth of an idea, Florence (1469-1482) 2. Machine models: from the flying vessel to the glider Milan (1483-1499) 3. Nature in the foreground Florence and Milan (1500-1508) 4. Failure of the dream: the primacy of theory: Milan, Rome, Cloux (1509-1519) 5. Leonardo da Vinci: a chronology
