How do we see the world around us? 'The Penguin on Design' series includes the works of creative thinkers whose writings on art, design and the media have changed our vision forever. Susan Sontag's groundbreaking critique of photography asks forceful questions about the moral and aesthetic issues surrounding this art form. Photographs are everywhere.They have the power to shock, idealize or seduce, they create a sense of nostalgia and act as a memorial, and they can be used as evidence against us or to identify us. In six incisive essays, Sontag examines the ways in which we use these omnipresent images to manufacture a sense of reality and authority in our lives.