Discourses: Book 3 15 : 2
In the same way, when some people have seen a philosopher and heard someone speaking like Euphrates (though, indeed, who can speak like him?), they wish to be philosophers themselves. Man, consider first what the business is, and then your own natural ability, what you can bear. If you wish to be a wrestler, look to your shoulders, your thighs, your loins. For one man has a natural talent for one thing, another for another. Do you suppose that you can do the things you do now, and yet be a philosopher? Do you suppose that you can eat in the same fashion, drink in the same fashion, give way to anger and to irritation, just as you do now? You must keep vigils, work hard, overcome certain desires, abandon your own people, be despised by a paltry slave, be laughed to scorn by those who meet you, in everything get the worst of it, in office, in honour, in court. Look these drawbacks over carefully, and then, if you think best, approach philosophy, that is, if you are willing at the price of these things to secure tranquillity, freedom, and calm. Otherwise, do not approach; don't act like a child—now a philosopher, later on a tax-gatherer, then a rhetorician, then a procurator of Caesar. These things do not go together. You must be one person, either good or bad; you must labour to improve either your own governing principle or externals; you must work hard either on the inner man, or on things outside; that is, play the rôle of a philosopher, or else that of a layman.