Discourses, "To or Against a Person Who Was One of Those Who Were Not Valued Esteemed by Him" (§3)

“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.”