 James Porter has recently argued that analogizing between art forms characterized a whole culture of sensualist aesthetic thinking before Plato and hence the early appearance of a general idea “art.” Poetry commented on architecture, drama on rhetoric (Porter 2010, 188). We may add that in another fashion tragedy compared itself to sculpture (Pappas 2012b, 325). Some of these interpretations of aesthetic analysis are controversial; but there is no doubt that the Homeric “shield of Achilles” passage (Iliad 18.479–609) implies a parallel between the shield’s presentation of war and peace and the treatment of those same subjects in Homer. What Hephaestus depicts on the shield, Homer depicts in his epics (Cunningham 2007, Francis 2009).