Regum et imperatorum apophthegmata

Plutarch

Plutarch. Moralia, Vol. III. Babbitt, Frank Cole, translator. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd., 1931 (printing).

In a battle he was wounded by a spear which pierced his shield, and, pulling the weapon out of the wound, with this very spear he slew his foe. Asked how he got his wound, he said, ’twas when my shield turned traitor. [*](Cf. Moralia, 219 C, infra, and 548 B.)