16
Cf. Plato, "Cratylus," p. 257, E. ὦ παῖ Ὶππονίκου Ὲρμόγενες, παλαιὰ παροιμἰα, ὃτι χαλεπὰ τὰ καλἀ ἐσιν ὃπη ἔχει μαθεῖν. So Horace, "Sat." i. ix. 59, 60, "Nil sine magno Vita labore dedit mortalibus."
17
"Midias," p. 411, C.
18
i.e., occasionally and sparingly.
19
Diogenes Laertius assigns the remark to Aristippus, while Stobæus fathers it on Aristo.
20
A favourite thought with the ancients. Compare Isocrates, "Admonitio ad Demonicum," p. 18; and Aristotle, "Nic. Eth.," iv. 3.