Much of Twombly's work is a direct reflection of his response to Greek and Roman mythology and contemporary graffiti. His gestural drawing and painting technique is extremely hard to replicate.
"One could say that any child could make a drawing like Twombly, only in the sense that any fool with a hammer could fragment sculptures like Rodin, or any house painter could splatter paint as well as Pollock. In none of these cases would it be true. In each case, the art lies not so much in the finesse of each individual mark, but in the orchestration of a previously uncodified set of personal rules about where to act, and where not, how far to go, and when to stop. In such a way as the cumulative courtship of seeming chaos defines an original hybrid kind of order which in turn, illuminates a complex sense of human experience not voiced or left marginal in previous art."
Kirk Varnedoe - Chief Curator, MOMA, and Professor of Art History, Princeton U.