Why then do you say nothing to me? I can only say this to you, that he who knows not who he is, and for what purpose he exists, and what is this world, and with whom he is associated, and what things are the good and the bad, and the beautiful and the ugly, and who neither understands discourse nor demonstration, nor what is true nor what is false, and who is not able to distinguish them, will neither desire according to nature nor turn away nor move towards, nor intend (to act), nor assent, nor dissent, nor suspend his judgment: to say all in a few words, he will go about dumb and blind, thinking that he is somebody, but being nobody. Is this so now for the first time? Is it not the fact that ever since the human race existed, all errors and misfortunes have arisen through this ignorance? This is all that I have to say to you; and I say even this not willingly. Why? Because you have not roused me. For what must I look to in order to be roused, as men who are expert in riding are roused by generous horses? Must I look to your body? You treat it disgracefully. To your dress? That is luxurious. To your behavior, to your look? That is the same as nothing. When you would listen to a philosopher, do not say to him, You tell me nothing; but only show yourself worthy of hearing or fit for hearing; and you will see how you will move the speaker. THAT LOGIC IS NECESSARY.—When one of those who were present said, Persuade me that logic is necessary, he replied, Do you wish me to prove this to you? The answer was, Yes. Then I must use a demonstrative form of speech. This was granted. How then will you know if I am cheating you by my argument? The man was silent. Do you see, said Epictetus, that you yourself are admitting that logic is necessary, if without it you cannot know so much as this, whether logic is necessary or not necessary?