[Sight], placed in the class of faculties, 5. [477 C]; requires in addition to vision and colour, a third element, light, 6. [507]; the most wonderful of the senses, [ibid.]; compared to mind, ib. [508]; 7. [532 A]; illusions of, 7. [523]; 10. [602], [603 D]:
—the world of sight, 7. [517].

Sign, the, of Socrates, 6. [496 C].

Silver, mingled by the God in the auxiliaries, 3. [415 A] (cp. [416 E]; 8. [547 A]);
—[and gold] not allowed to the guardians, 3. [416 E]; 4. [419], [422 D]; 5. [464 D] (cp. 8. [543]).

Simonides, his definition of justice discussed, 1. [331 D]–335 E; a sage, ib. [335 E].

Simplicity, the first principle of education, 3. [397] foll., [400 E], [404]; the two kinds of, ib. [400 E]; of the good man, ib. [409 A]; in diet, 8. [559 C] (cp. 3. [404 D]).

Sin, punishment of, 2. [363]; 10. [614] foll. Cp. [Hades], [World below].

Sirens, harmony of the, 10. [617 B].

Skilled person, the, cannot err (Thrasymachus), 1. [340 D].

Slavery, more to be feared than death, 3. [387 A]; of Hellenes condemned, 5. [469 B].

Slaves, the uneducated man harsh towards, 8. [549 A]; enjoy great freedom in a democracy, ib. [563 B]; always inclined to rise against their masters, 9. [578] [cp. Laws 6. 776, 777].