"[Who should govern, and who should be governed? Probably,] . . . the stronger should rule and the weaker should obey. [This situation] prevails throughout the animal kingdom--by decree of nature, as Pindar of Thebes once remarked. But it looks as if the most important claim will be . . . that the ignorant man should follow the leadership of the wise and obey his orders. In spite of you, my clever Pindar, what I'd called the 'decree of nature' is in fact the rule of law that governs willing subjects, without being imposed by force; I'm certainly not prepared to say it's unnatural."

"Human nature involves, above all, pleasures, pains, and desires, and no mortal animal can help being hung up dangling in the air (so to speak) in total dependence on these powerful influences." --The Athenian, 732e

See also 732e, 836c-e, 838b-839c. See especially 891c-892d ff.

See also reading notes on Jordan's book.