The Iliad 21.248–262

goodly Achilles from his labour, and ward off ruin from the Trojans. But the son of Peleus rushed back as far as a spear-cast with the swoop of a black eagle, the mighty hunter, that is alike the strongest and swiftest of winged things; like him he darted, and upon his breast the bronze rang terribly, while he swerved from beneath the flood and fled ever onward, and the River followed after, flowing with a mighty roar. As when a man that guideth its flow leadeth from a dusky spring a stream of water amid his plants and garden-lots a mattock in his hands and cleareth away the dams from the channel— and as it floweth all the pebbles beneath are swept along therewith, and it glideth swiftly onward with murmuring sound down a sloping place and outstrippeth even him that guideth it;—even thus did the flood of the River