Discourses: Book 4 8 : 2
What, then, is the reason for this? It is because we respect the prime conception of the carpenter, and the musician, and so also of all the other artisans and artists, while we do not respect that of the philosopher, but as if it were confused and inarticulate in our minds we judge of it only from externals. And what other art is there that is acquired by guise and hair-dress, and does not have also principles, and subject-matter, and end? What, then, is subject-matter for the philosopher? It is not a rough cloak, is it? No, but reason. what is end for the philosopher? It is not to wear a rough cloak, is it? No, but to keep his reason right. What is the nature of his principles? They do not have to do with the question how to grow a long beard, or a thick head of hair, do they? Nay, rather, as Zeno says, to understand the elements of reason, what the nature of each one is, and how they are fitted one to another, and all the consequences of these facts. Will you not, therefore, observe first of all whether the philosopher fulfils his profession by misbehaving, and then, if that be the case, blame his way of acting? But as it is, when you yourself are behaving decently, you say, on the basis of the evil that he seems to you to be doing, "Look at the philosopher," just as though it were proper to call a man who acts like that a philosopher; and again, "Is that what a philosopher is?" But you do not say, "Look at the carpenter," when you know that a man is an adulterer, or see a man eating greedily, nor do you say, under similar circumstances, "Look at the musician." Thus to a certain degree you too realize what the philosopher's profession is, but you backslide and get confused through carelessness.