The Iliad 20.159–173

even Aeneas, Anchises' son, and goodly Achilles. Aeneas first strode forth with threatening mien, his heavy hem nodding above him; his valorous shield he held before his breast, and he brandished a spear of bronze. And on the other side the son of Peleus rushed against him him like a lion, a ravening lion that men are fain to slay, even a whole folk that be gathered together; and he at the first recking naught of them goeth his way, but when one of the youths swift in battle hath smitten him with a spear-cast, then he gathereth himself open-mouthed, and foam cometh forth about his teeth, and in his heart his valiant spirit groaneth, and with his tail he lasheth his ribs and his flanks on this side and on that, and rouseth himself to fight, and with glaring eyes he rusheth straight on in his fury, whether he slay some man or himself be slain in the foremost throng; even so was Achilles driven by his fury,