The Ghost of Galileo

In 1643/4 the once-famous Francis Cleyn painted the unhappy young heir of Corfe Castle, John Bankes, and his tutor, Dr Maurice Williams. The painter is now almost forgotten,the painting much neglected, and the sitters themselves have left little to mark their lives, but on the table of the painting lies a book, open to an immediately identifiable and very significant page. The representation omits the author's name and the book's title; it sits there as a code, asonly viewers who had encountered the original and the characteristic figures on its frontispiece would have known its significance. The book is Galileo's Dialogue on the two chief world systems (1632), the defence of Copernican cosmology that incited the infamous clash between its author and theChurch, and its presence in this painting is no accident, but instead a statement of learning, attitudes, and cosmopolitan engagement in European discourse by the painting's English subjects. Grasping hold of the clue, John...