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In what A man ought to be exercised who has made proficiency; and that we neglect the chief things.—There are three things (topics, [Greek: topoi]) in which a man ought to exercise himself who would be wise and good. The first concerns the desires and the aversions, that a man may not fail to get what he desires, and that he may not fall into that which he does not desire. The second concerns the movements towards an object and the movements from an object, and generally in doing what a man ought to do, that he may act according to order, to reason, and not carelessly. The third thing concerns freedom from deception and rashness in judgment, and generally it concerns the assents ([Greek: sugchatatheseis]). Of these topics the chief and the most urgent is that which relates to the affects ([Greek: ta pathae] perturbations); for an affect is produced in no other way than by a failing to obtain that which a man desires or falling into that which a man would wish to avoid. This is that which brings in perturbations, disorders, bad fortune, misfortunes, sorrows, lamentations, and envy; that which makes men envious and jealous; and by these causes we are unable even to listen to the precepts of reason. The second topic concerns the duties of a man; for I ought not to be free from affects ([Greek: apathae]) like a statue, but I ought to maintain the relations ([Greek: scheseis]) natural and acquired, as a pious man, as a son, as a father, as a citizen.
The third topic is that which immediately concerns those who are making proficiency, that which concerns the security of the other two, so that not even in sleep any appearance unexamined may surprise us, nor in intoxication, nor in melancholy. This, it may be said, is above our power. But the present philosophers neglecting the first topic and the second (the affects and duties), employ themselves on the third, using sophistical arguments ([Greek: metapiptontas]), making conclusions from questioning, employing hypotheses, lying. For a man must, it is said, when employed on these matters, take care that he is not deceived. Who must? The wise and good man. This then is all that is wanting to you. Have you successfully worked out the rest? Are you free from deception