The first requisite for a philosopher (replies Sokrates) is, that he shall love and pursue eagerly every sort of knowledge or wisdom, without shrinking from labour for such purpose. But it is not sufficient that he should be eager about hearing tragedies or learning the minor arts. Other men, accomplished and curious, are fond of hearing beautiful sounds and discourses, or of seeing beautiful forms and colours. But the philosopher alone can see or distinguish truth.[146] It is only he who can distinguish the genuine Form or Idea, in which truth consists, from the particular embodiments in which it occurs. These Forms or Ideas exist, eternal and unchangeable. Since Pulchrum is the opposite of Turpe, they must be two, and each of them must be One: the same about Just and Unjust, Good and Evil; each of these is a distinct Form or Idea, existing as One and Unchangeable by itself, but exhibiting itself in appearance as manifold, diverse, and frequently changing, through communion with different objects and events, and through communion of each Form with others.[147] Now the accomplished, but unphilosophical, man cannot see or recognise this Form in itself. He can see only the different particular cases and complications in which it appears embodied.[148] None but the philosopher can contemplate each Form by itself, and discriminate it from the various particulars in conjunction with which it appears. Such philosophers are few in number, but they are the only persons who can be said truly to live. Ordinary and even accomplished men--who recognise beautiful things, but cannot recognise Beauty in itself, nor even follow an instructor who points it out to them--pass their lives in a sort of dream or reverie: for the dreamer, whether asleep or awake, is one who believes what is similar to another thing to be not merely similar, but to be the actual thing itself.[149] The philosopher alone, who embraces in his mind the one and unchangeable Form or Idea, along with, yet distinguished from, its particular embodiments, possesses knowledge or science. The unphilosophical man, whose mind embraces nothing higher than variable particulars, does not know--but only opines, or has opinions.[150] [Footnote 146: Plato, Republic, v. pp. 474-475. [Greek: tou\s tê=s a)lêthei/as philothea/monas] (p. 475 E).] [Footnote 147: Plato, Republic, v. p. 476 A. [Greek: E)peidê/ e)stin e)nanti/on kalo\n ai)schrô=|, du/o au)tô\ ei)=nai . . . Ou)kou=n e)peidê\ du/o, kai\ e(\n e)ka/teron? . . . Kai\ peri\ dikai/ou kai\ a)di/kou kai\ a)gathou= kai\ kakou= kai\ pa/ntôn tô=n ei)dô=n pe/ri, o( au)to\s lo/gos, au)to\ me\n e(\n e(/kaston ei)=nai, tê=| de\ tô=n pra/xeôn kai\ sôma/tôn kai\ a)llê/lôn koinôni/a| pantachou= phantazo/mena polla\ phai/nesthai e(/kaston?]] [Footnote 148: Plato, Republic, v. p. 476 B.] [Footnote 149: Plato, Republic, v. p. 476 B.]