Over the course of a career that spanned fifty years, Agnes Martin’s austere, serene work anticipated and helped to define Minimalism, even as she battled psychological crises and carved out a solitary existence in the American Southwest. Martin identified with the Abstract Expressionists but her commitment to linear geometry caused her to be associated in turn with Minimalist, feminist, and even outsider artists. She moved through some of the liveliest art communities of her time while maintaining a legendary reserve. “I paint with my back to the world,” she says both at the beginning and at the conclusion of a documentary filmed when she was in her late eighties. When she died at ninety-two, in Taos, New Mexico, it is said she had not read a newspaper in half a century.No substantial critical monograph exists on this acclaimed artist—the recipient of two career retrospectives as well as the National Medal of the Arts—who was championed by critics as diverse in their approaches as Lucy Lippard, Lawrence Alloway, and Rosalind Krauss. Furthermore, no attempt has been made to describe her extraordinary life. The whole engrossing story, told here for the first time, Agnes Martin is essential reading for anyone interested in abstract art or the history of women artists in America.