Plutarch Quaestiones Convivales 2.8.1

[1] SOME say the horses called λυκοσπάδες received that name from the fashion of their bridles (called λύκοι), that had prickles like the teeth on the wolf’s jaw; for being fiery and hard-mouthed, the riders used such to tame them. But my father, who seldom speaks but on good reason, and breeds excellent horses, said, those that were set upon by wolves when colts, if they escaped, grew swift and mettlesome, and were called λυκοσπάδες. Many agreeing to what he said, it began to be enquired why such an accident as that should make them more mettlesome and fierce; and many of the company thought that, from such an assault, fear and not courage was produced; and that thence growing fearful and apt to start at every thing, their motions became more quick and vigorous, as they are in wild beasts when entangled in a net. But, said I, it ought to be considered whether the contrary be not more probable; for the colts do not become more swift by escaping the assault of a wild beast, but they had never escaped unless they had been swift and mettlesome before. As Ulysses was not made wise by escaping from the Cyclops, but he escaped by being wise before.