Agnes Martin was born in Canada but moved to the United States in 1932, becoming an American citizen in 1950. Her paintings were representational until the mid-1950s. By 1964, she had fully developed her characteristic style of canvases covered with a grid structure. In a manner similar to that employed by Mondrian as well as by contemporary minimalist artists, Martin's use of grids asserts the flatness of the picture plane and suggests a meditative spirituality. Her work avoids personal and biographical references as well as influences from nature. Martin has also written extensively on art.