1 Cf. 535 B, Protag. 326 C.
2 For the tripartite soul cf. Vol. I. on 435 A and 436 B, Unity of Plato's Thought, p. 42, What Plato Said, p. 526 on Phaedo 68 C, p. 552 on Phaedr. 246 B, and p. 563 on Rep. 435 B-C.
3 Cf. Vol. I. on 435 C, Phaedr. 274 A, Friedländer, Platon, ii. pp. 376-377, Jowett and Campbell, p. 300 Frutiger, Mythes de Platon, pp. 81 ff., and my Idea of Good in Plato's Republic(Univ. of Chicago Studies in class. Phil. vol. i. p. 190). There is no mysticism and no obscurity. The longer way is the higher education, which will enable the philosopher not only like ordinary citizens to do the right from habit and training, but to understand the reasons for it. The outcome of such an education is described as the vision of the idea of good, which for ethics and politics means a restatement of the provisional psychological definition of the cardinal virtues in terms of the ultimate elements of human welfare. For metaphysics and cosmogony the vision of the idea of good may means teleological interpretation of the universe and the interpretation of all things in terms of benevolent design. That is reserved for poetical and mythical treatment in the Timaeus. The Republic merely glances at the thought from time to time and returns to its own theme. Cf.also Introd. p. xxxv.
4 Cf. Cic.De fin. i. 1 “nec modus est ullus investigandi veri nisi inveneris.” Note not only the edifying tone and the unction of the style but the definite suggestion of Plato's distaste for relativity and imperfection which finds expression in the criticism of the homo mensura in the Theaetetus, in the statement of the Laws 716 C, that God is the measure of all things (What Plato Said, p. 631), and in the contrast in the Politicus 283-294 between measuring things against one another and measuring them by an idea. Cf. 531 A.
5 Cf. Menex. 234 A, Charm. 158 C, Symp. 204 A, Epist. vii. 341 A. From here to the end of this Book the notes are to be used in connection with the Introduction, pp. xxiii-xxxvi, where the idea of good and the divided line are discussed.
6 Cf. Phaedr. 274 A.
7 i.e. sketch, adumbration. The ὑπογραφή is the account of the cardinal virtues in Bk. iv. 428-433.
8 For πᾶν ποιεῖν cf. on 488 C, for συντεινομένουςEuthydem. 288 D.
9 Such juxtaposition of forms of the same word is one of the most common features of Plato's style. Cf. 453 Bἑνα ἕν, 466 Dπάντα πάντῃ, 467 Dπολλὰ πολλοῖς, 496 Cοὐδεὶς οὐδέν, Laws 835 Cμόνῳ μόνος, 958 Bἑκόντα ἑκών. Cf. also Protag. 327 B, Gorg. 523 B, Symp. 217 B, Tim. 92 b, Phaedo 109 B, Apol. 232 C, and Laws passim.
10 The answer is to the sense. Cf. 346 E, Crito 47 C, and D, Laches 195 D, Gorg. 467 E. See critical note.
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