Calumniae non temere credundum
Lucian of Samosata
Lucian, Vol. 1. Harmon, A. M., editor. London: William Heinemann, Ltd.; Cambridge, MA: Harvard University Press, 1913.
Ptolemy is said to have been so ashamed of the affair that he presented Apelles with a hundred talents and gave him Antiphilus for his slave. Apelles, for his part, mindful of the risk that he had run, hit back at slander in a painting.