Timoleon
Plutarch
Plutarch. Plutarch's Lives, Vol. VI. Perrin, Bernadotte, translator. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd., 1918.
So true is it that the purposes of men, unless they acquire firmness and strength from reason and philosophy for the activities of life, are unsettled and easily carried away by casual praise and blame, being forced out of their native reckonings.