'If I place a lamp on a shelf, all of the shelves bellow it are in shadow. Only by moving the light source forward can I light up the backs of the books. What I then have is a body with a shaft with a light at the end of it. The body, which houses the transformer and the switch, needs to be able to placed in any position on the shelf unit, occupying a minimum of space and pass virtually unnoticed. What better form could I imagine than that of a book?''. OSCAR TUSQUETS