If you’ve never seen a painting or drawing by Agnes Martin in person you are probably wondering what the heck?  I urge you to go out of your way to see one, or twenty.  She gave a talk at my school when I was in college, stood wringing a handkerchief and saying among other things, “You are either on the side of life or you are not.”  For more information, get yourself a good translation of the Tao te Ching.  Here’s another clue:  http://www.drawingcenter.org/exh_past.cfm?exh=106

This painting, Milk River, is at the Whitney Museum.  Their website is www.whitney.org.