Some persons raise a question whether the social feeling is contained in the nature of man; and yet I think that these same persons would have no doubt that love of purity is certainly contained in it, and that if man is distinguished from other animals by anything, he is distinguished by this. When then we see any other animal cleaning itself, we are accustomed to speak of the act with surprise, and to add that the animal is acting like a man; and on the other hand, if a man blames an animal for being dirty, straightway, as if we were making an excuse for it, we say that of course the animal is not a human creature. So we suppose that there is something superior in man, and that we first receive it from the gods. For since the gods by their nature are pure and free from corruption, so far as men approach them by reason, so far do they cling to purity and to a love (habit) of purity. But since it is impossible that man’s nature ([Greek: ousia]) can be altogether pure, being mixed (composed) of such materials, reason is applied, as far as it is possible, and reason endeavors to make human nature love purity.

The first then and highest purity is that which is in the soul; and we say the same of impurity. Now you could not discover the impurity of the soul as you could discover that of the body; but as to the soul, what else could you find in it than that which makes it filthy in respect to the acts which are her own? Now the acts of the soul are movement towards an object or movement from it, desire, aversion, preparation, design (purpose), assent. What then is it which in these acts makes the soul filthy and impure? Nothing else than her own bad judgments ([Greek: chrimata]). Consequently the impurity of the soul is the soul’s bad opinions; and the purification of the soul is the planting in it of proper opinions; and the soul is pure which has proper opinions, for the soul alone in her own acts is free from perturbation and pollution.

For we ought not even by the appearance of the body to deter the multitude from philosophy; but as in other things, a philosopher should show himself cheerful and tranquil, so also he should in the things that relate to the body. See, ye men, that I have nothing, that I want nothing; see how I am without a house, and without a city, and an exile, if it happens to be so, and without a hearth I live more free from trouble and more happily than all of noble birth and than the rich. But look at my poor body also and observe that it is not injured by my hard way of living. But if a man says this to me, who has the appearance (dress) and face of a condemned man, what god shall persuade me to approach philosophy, if it makes men such persons? Far from it; I would not choose to do so, even if I were going to become a wise man. I indeed would rather that a young man, who is making his first movements towards philosophy, should come to me with his hair carefully trimmed than with it dirty and rough, for there is seen in him a certain notion (appearance) of beauty and a desire of (attempt at) that which is becoming; and where he supposes it to be, there also he strives that it shall be. It is only necessary to show him (what it is), and to say: Young man, you seek beauty, and you do well; you must know then that it (is produced) grows in that part of you where you have the rational faculty; seek it there where you have the movements towards and movements from things, where you have the desires towards and the aversion from things; for this is what you have in yourself of a superior kind; but the poor body is naturally only earth; why do you labor about it to no purpose? if you shall learn nothing else, you will learn from time that the body is nothing. But if a man comes to me daubed with filth, dirty, with a moustache down to his knees, what can I say to him, by what kind of resemblance can I lead him on? For about what has he busied himself which resembles beauty, that I may be able to change him and say, Beauty is not in this, but in that? Would you have me to tell him, that beauty consists not in being daubed with muck, but that it lies in the rational part? Has he any desire of beauty? has he any form of it in his mind? Go and talk to a hog, and tell him not to roll in the mud.