Glaucon said: If curiosity makes a philosopher, you will find many a strange being will have a title to the name. All the lovers of sights have a delight in learning, and must therefore be included. Musical amateurs, too, are a folk strangely out of place among philosophers, for they are the last persons in the world who would come to anything like a philosophical discussion, if they could help, while they run about at the Dionysiac festivals as if they had let out their ears to hear every chorus; whether the performance is in town or country--that makes no difference--they are there. Now are we to maintain that all these and any who have similar tastes, as well as the professors of quite minor arts, are philosophers? Certainly not, I replied; they are only an imitation. He said: Who then are the true philosophers? Those, I said, who are lovers of the vision of truth. That is also good, he said; but I should like to know what you mean? To another, I replied, I might have a difficulty in explaining; but I am sure that you will admit a proposition which I am about to make. What is the proposition? That since beauty is the opposite of ugliness, they are two? Certainly. And inasmuch as they are two, each of them is one? True again. And of just and unjust, good and evil, and of every other class, the same remark holds: taken singly, each of them one; but from the various combinations of them with actions and things and with one another, they are seen in all sorts of lights and appear many? Very true. And this is the distinction which I draw between the sight-loving, art-loving, practical class and those of whom I am speaking, and who are alone worthy of the name of philosophers. How do you distinguish them? he said. The lovers of sounds and sights, I replied, are, as I conceive, fond of fine tones and colours and forms and all the artificial products that are made out of them, but their mind is incapable of seeing or loving absolute beauty. True, he replied. Few are they who are able to attain to the sight of this. Very true. And he who, having a sense of beautiful things has no sense of absolute beauty, or who, if another lead him to a knowledge of that beauty is unable to follow--of such an one I ask, Is he awake or in a dream only? Reflect: is not the dreamer, sleeping or waking, one who likens dissimilar things, who puts the copy in the place of the real object? I should certainly say that such an one was dreaming. But take the case of the other, who recognises the existence of absolute beauty and is able to distinguish the idea from the objects which participate in the idea, neither putting the objects in the place of the idea nor the idea in the place of the objects--is he a dreamer, or is he awake? He is wide awake. And may we not say that the mind of the one who knows has knowledge, and that the mind of the other, who opines only, has opinion Certainly.