This book takes up the utopian desire for a perfect language of words giving direct expression to the real, known in Western thought as Cratylism, and its impact on the social visions and poetic projects of three of the most intellectually ambitious of American writers: Walt Whitman, Laura (Riding) Jackson, and Charles Olson. A coda looks at the work of the Language writers, who carry forward this tradition in surprising ways. Based on close readings of theoretical and poetic texts, and drawing on archival research, this book makes two basic claims: that belief in an intrinsic relationship between words and things is linked in American poetry to utopian social projects; and that poets with a deep understanding of how language operates are nonetheless attracted to this belief-despite recognizing its fantastic elements-because it allows them to articulate a social mandate for poetry.