The Republic by Plato
The Republic by Plato Then what remains to be discovered is the object which partakes equally of the nature of being and not-being, and cannot rightly be termed either, pure and simple; this unknown term, when discovered, we may truly call the subject of opinion, and assign each to their proper faculty,—the extremes to the faculties of the extremes and the mean to the faculty of the mean.
True.
This being premised, I would ask the gentleman who is of opinion that there is no absolute or unchangeable idea of beauty—in whose opinion the beautiful is the manifold—he, I say, your lover of beautiful sights, who cannot bear to be told that the beautiful is one, and the just is one, or that anything is one—to him I would appeal, saying, Will you be so very kind, sir, as to tell us whether, of all these beautiful things, there is one which will not be found ugly; or of the just, which will not be found unjust; or of the holy, which will not also be unholy?
No, he replied; the beautiful will in some point of view be found ugly; and the same is true of the rest.
And may not the many which are doubles be also halves?—doubles, that is, of one thing, and halves of another?
Quite true.