Wall Drawing #63: A wall is divided into four horizontal parts. In the top row are four equal vertical divisions, each with lines in a different direction. In the second row, six double combinations; in the third row, four triple combinations; in the bottom row, all four combinations superimposed

Over nearly four decades, Sol LeWitt’s work—equal parts conceptual and visual—introduced new ways of making and thinking about art. The artist posited his influential ideas most clearly in over 1,200 wall drawings, conceived in the form of written instructions and a diagram. LeWitt shared the creation of his work with other makers: this piece was drawn by Roland Lusk, Eileen Jeng, and Jason Stec (January–February 2009) and varnished by John Hogan.