Considered a key pioneer of conceptual art, Sol LeWitt operated on the belief that the idea generating the artwork is more important than its execution—a notion that helped to define postmodern notions of what art is and can be. During his four-decade career, LeWitt produced more than 1,200 “wall drawings.” These utilized a deliberately limited repertoire of lines and geometric shapes, but the results pushed beyond Minimalism, achieving an astonishing level of beauty and complexity. This film focuses on a retrospective of LeWitt’s drawings at MASS MoCA in North Adams, Massachusetts, which opened for a planned 25-year run in 2008. The exhibition includes 105 works from 1968 to 2008, installed posthumously, on roughly 40,000 square feet of old mill wall surface—the most expansive view of LeWitt’s oeuvre in a single space. (54 minutes)