Letters

But were I to undertake this task it would not, as I think, prove a good thing for men, save for some few who are able to discover the truth themselves with but little instruction; for as to the rest, some it would most unseasonably fill with a mistaken contempt, and others with an overweening and empty aspiration, as though they had learnt some sublime mysteries. But concerning these studies I am minded to speak still more at length; since the subject with which I am dealing will perhaps be clearer when I have thus spoken. For there is a certain true argument which confronts the man who ventures to write anything at all of these matters, an argument which, although I have frequently stated it in the past, seems to require statement also at the present time. Every existing object has three things which are the necessary means by which knowledge of that object is acquired; and the knowledge itself is a fourth thing; and as a fifth one must postulate the object itself which is cognizable and true. First of these comes the name; secondly the definition; thirdly the image; fourthly the knowledge. If you wish, then, to understand what I am now saying, take a single example and learn from it what applies to all. There is an object called a circle, which has for its name the word we have just mentioned and, secondly, it has a definition, composed of names and verbs; for that which is everywhere equidistant from the extremities to the center will be the definition of that object which has for its name round and spherical and circle. And in the third place there is that object which is in course of being portrayed and obliterated, or of being shaped with a lathe, and falling into decay; but none of these affections is suffered by the circle itself, whereto all these others are related inasmuch as it is distinct therefrom. Fourth comes knowledge and intelligence and true opinion regarding these objects; and these we must assume to form a single whole, which does not exist in vocal utterance or in bodily forms but in souls; whereby it is plain that it differs both from the nature of the circle itself and from the three previously mentioned. And of those four intelligence approaches most nearly in kinship and similarity to the fifth, and the rest are further removed. The same is true alike of the straight and of the spherical form, and of color, and of the good and the fair and the just, and of all bodies whether manufactured or naturally produced (such as fire and water and all such substances), and of all living creatures, and of all moral actions or passions in souls. For unless a man somehow or other grasps the four of these, he will never perfectly acquire knowledge of the fifth.