For philosophers say we allow none to be free except the educated; that is, God does not allow it. When then a man has turned round before the prætor his own slave, has he done nothing? He has done something. What? He has turned round his own slave before the prætor. Has he done nothing more? Yes: he is also bound to pay for him the tax called the twentieth. Well then, is not the man who has gone through this ceremony become free? No more than he is become free from perturbations. Have you who are able to turn round (free) others no master? is not money your master, or a girl or a boy, or some tyrant or some friend of the tyrant? Why do you trouble then when you are going off to any trial (danger) of this kind? It is for this reason that I often say, study and hold in readiness these principles by which you may determine what those things are with reference to which you ought to be cautious, courageous in that which does not depend on your will, cautious in that which does depend on it.