Discourses: Book 3 21 : 3
One ought to approach these matters in a different fashion; the affair is momentous, it is full of mystery, not a chance gift, nor given to all comers. Nay, it may be that not even wisdom is all that is needed for the care of the young; one ought also to have a certain readiness and special fitness for this task, by Zeus, and a particular physique, and above all the counsel of God advising him to occupy this office, as God counselled Socrates to take the office of examining and confuting men, Diogenes the office of rebuking men in a kingly manner, and Zeno that of instructing men and laying down doctrines. But you are opening up a doctor's office although you possess no equipment other than drugs, but when or how these drugs are applied you neither know nor have ever taken the trouble to learn. "See," you say, "that man has these eye-salves, and so have I." Have you, then, at all the faculty of using them aright? Do you know at all when and how and for whom they will do good? Why, then, do you play at hazard in matters of the utmost moment, why do you take things lightly, why do you put your hand to a task that is altogether inappropriate for you? Leave it to those who are able to do it, and do it with distinction. Do not yourself by your own actions join the number of those who bring disgrace upon philosophy, and do not become one of those who disparage the profession. If, however, you find the principles of philosophy entertaining, sit down and turn them over in your mind all by yourself, but don't ever call yourself a philosopher, and don't allow anyone else to say it of you, but say, rather, "He is mistaken; for my desire is no different from what it used to be, nor my choice, nor my assent, nor, in a word, have I changed at all, in my use of external impressions, from my former state." Think this and say this about yourself, if you wish to think aright. If not, keep on playing at hazard and doing what you are doing now; for it becomes you.