But, again, it is possible for a man to “have knowledge” in yet another way than those just mentioned: we see, I mean, that “having knowledge without using it” includes different modes of having, so that a man may have it in one sense and in another sense not have it; for instance, a man who is asleep, or mad, or drunk. But people who are under the influence of passion are in a similar state; for anger, and sexual desire and the like do evidently alter the condition of the body, and in some cases actually produce madness. It is plain, then, that the incontinent man must be allowed to have knowledge in the same sort of way as those who are asleep, mad, or drunk. 178
But to repeat the words of knowledge is no proof that a man really has knowledge [in the full sense of having an effective knowledge]; for even when they are under the influence of these passions people repeat demonstrations and sayings of Empedocles, just as learners string words together before they understand their meaning—the meaning must be ingrained in them, and that requires time. So we must hold that the incontinent repeat words in the same sort of way that actors do.