Regarding their custom of calling the king of the Persians the Great King, he said, ‘In what respect is he greater than I, unless he is more upright and self-restrained ?’ 1
1 Cf. Moralia, 78 D, 213 C, 545 A; Plutarch's Life of Agesilaus, chap. xxiii. (608 F); also Xenophon, Agesilaus, 8. 4. A similar remark of Socrates is found in Plato, Gorgias, 470 E.