Timoleon
Plutarch
Plutarch. Plutarch's Lives, Vol. VI. Perrin, Bernadotte, translator. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd., 1918.
for this would conduce to his own safety, and they, on their part, would abide more firmly by their promises regarding the Syracusans if they made a people witness to the agreements into which they entered.