Interest in Robert Hooke (1635 - 1703) is growing and his reputation is rising. A widespread sympathy for a neglected figure of seventeenth-century science is being displaced by a mixture of astonishment at the extraordinary range and diversity of his talents, esteem for the originality and acumen of his science, admiration for his administrative capability and civicintegrity, and fascination at the energy, emotion, and frailty evident in a life fully engaged with the world of Restoration London. The four authors of London's Leonardo have come together to provide a significant revaluation of the most important facets of his life and work: his career as a public man, his instrument designing and making, his scientific thought, and the private world of his personal life, his illnesses and his medications.