Book excerpt: He delivered the lectures, edited and reproduced here with their illustrations, to overflowing crowds at the National Gallery of Art in Washington in the spring of 2003, just months before his death. With brilliance, passion, and humor, Varnedoe addresses the skeptical attitudes and misunderstandings that we often bring to our experience of abstract art. Resisting grand generalizations, he makes a deliberate and scholarly case for abstraction--showing us that more than just pure looking is necessary to understand the self-made symbolic language of abstract art. Proceeding decade by decade, he brings alive the history and biography that inform the art while also challenging the received wisdom about distinctions between abstraction and representation, modernism and postmodernism, and minimalism and pop.