I Don't Know . The Weave of Textile Language is a unique project by the renowned American artist Richard Tuttle (b. 1941). Tuttle, who came to prominence in the 1960s, is revered for his delicate and playful approach, often using such humble, everyday materials as cloth, paper, rope, and plywood. Drawing on Tuttle's knowledge as a longstanding collector of textiles from around the world, the book investigates the importance of the material throughout history, across Tuttle's remarkable body of work, and into the latest developments in his practice. Included are photographs of Tuttle's collection; essays about the historical, aesthetic, social, and material value of textiles; images of works from a recent Whitechapel Gallery exhibition; and documentation of his newly commissioned sculpture in Tate Modern's Turbine Hall.