Regum et imperatorum apophthegmata
Plutarch
Plutarch. Moralia, Vol. III. Babbitt, Frank Cole, translator. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd., 1931 (printing).
When Pompey had fled to sea from Rome, Caesar wished to take money from the treasury, but Metellus, who was in charge, tried to stop him, and locked up the treasury, whereupon Caesar threatened
to kill him. Metellus was astounded, but Caesar said, Young man, that was harder for me to say than to do. [*](Cf. Plutarch’s Life of Caesar, chap. xxv. (725 C); Life of Pompey, chap. lxii. (652 C); Appian The Civil Wars, ii. 41 and 138; Dio Cassius, xli. 17. 2; Cicero, Letters to Atticus, x. 4. 8; Lucan, Pharsalia, iii. 114-153.)