This book marks a new, original and authoritative re-examination of a major turning point in late twentieth-century art. Since the mid 1960s Conceptual art -- an art that consists of ideas, written down, enacted or simply carried in your head -- has directly challenged the very notion that a work of art is by definition an object of visual pleasure. Conceptual art is first and foremost an art of questions. As this book demonstrates, Conceptual art...