Recognized as one of the greatest and most idiosyncratic artists of the postwar era, Cy Twombly left behind an oeuvre of incredible versatility, sensitivity and originality upon his death in 2011 at age 83. Working in the immediate aftermath of Abstract Expressionism, Twombly developed an intensely personal scription consisting of scrawled letters and words, in an effusive, calligraphic mark-making that suggests a kind of painted poetry. Working across painting, drawing, sculpture and photography with a restless energy, Twombly incorporated the gods of Ancient Greece, the poetry of Stephane...