
“For every one feels to what purpose he can use his own powers. Before the horns of a calf appear and sprout from his forehead, he butts with them when angry, and pushes passionately.”
Sentit enim vis quisque suas quoad possit abuti.
cornua nata prius vitulo quam frontibus extent,
illis iratus petit atque infestus inurget.
Book V, lines 1033–1035 (tr. Bailey)
De Rerum Natura (On the Nature of Things)