At the height of his powers, Pablo Picasso was the artist as revolutionary, breaking through the niceties of form in order to mount a direct challenge to the va

"What is a face, really? Its own photo? Its make-up? Or is it a face as painted by such or such painter? That which is in front? Inside? Behind? And the rest? D

John Berger, one of the world's most celebrated storytellers and writers on art, tells a personal history of art from the prehistoric paintings of the Chauvet c