Book excerpt: On the occasion of his seventy-fith birthday, Pantheon is publishing a gathering of John Berger's most insightful and provocative writings on art over the past forty years. "Selected Essays brings together a comprehensive array of writings from Berger's previous collections: "Toward Reality, "The Moment of Cubism, "The Look of Things," About Looking, "The Sense of Sight, and "Keeping a Rendezvous. From Piero to Pollock, from Kokoschka to La Tour, from mass demonstrations to museums-the ideas in these essays are as fresh and compelling as they were when first published. Polemical, meditative, radical, always original, they display a remarkable continuity of thoughtful inquiry and political engagement.