Timoleon
Plutarch
Plutarch. Plutarch's Lives, Vol. VI. Perrin, Bernadotte, translator. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd., 1918.
in order that we may be satisfied with what we are about to do, and that mere weakness may not make us dejected over actions which have once been accomplished, when the fair vision of the Good fades away; just as gluttons who devour cloying viands with the keenest appetite are very soon sated and then disgusted with them.