Dan Flavin's radical use of fluorescent light throughout and beyond the 1960s forever changed the definitions of sculptural practice. This volume is an indispensable anthology on one of the central figures of Minimalism. Spanning four decades, It Is What It Is charts the evolution of consensus about the meaning of Flavin's art, highlighting the gradual acceptance to his ideas and his profound influence on postwar art history. Key essays on the artist and reviews of his exhibitions are assembled together for the first time in this volume, including some of the most influential artists, art critics and art historians working today - from Donald Judd and Lucy R. Lippard to Hilton Kramer and Rosalind Krauss.