The text that comprises Challenging Art: Artforum 1962–1974 is, to borrow from Roland Barthes (writing around the time Artforum became an established art-world institution), not “a line of words releasing a single ‘theological’ meaning,” but rather “a tissue of quotations drawn from the innumerable centers of culture.”1 Consisting of fragments of interviews woven together to produce a narrative that chronicles the first twelve years of Artforum’s publication, this text is literally a “tissue of quotations.”...