Soc. And of these, again, who make progress some find the benefit both solid and enduring; while there are many who, for as long a time as they are with me, make wonderful progress, but when they are parted from me relapse, and are no different from anybody else. This once befell Aristeides, Cf. Theaet. 151 A, from which this passage is derived. The Aristeides and Thucydides mentioned here were the grandsons respectively of Aristeides, the Athenian statesman of the time of the Persian wars, and of Thucydides, the aristocratic opponent of Pericles. Their fathers Lysimachus and Melesias appear in the Laches . son of Lysimachus, son of Aristeides. For by conversing with me he had made immense progress in a little time; and then he had to go on an expedition, and he went and sailed away. On his return he found that Thucydides, son of Melesias, son of Thucydides, had been conversing with me. Now Thucydides, the day before, had quarrelled with me over some arguments we had had. So when Aristeides saw me, after greeting me and talking of other affairs, he said: But Thucydides, I hear, Socrates, is somewhat on his dignity with you, and is annoyed as though he were somebody. Yes, that is so, I replied. Well, but does he not know, he said, what a sad slave he was, before he associated with you? It seems not, I replied, upon my soul. But indeed I myself also, he said, am in a ridiculous position, Socrates. How exactly? I asked. Because, he replied, before I sailed away, I was able to discuss things with anybody, and show myself inferior to none in argument, so that I even sought out the debates of the most accomplished people: but now, on the contrary, I shun them, wherever I notice there is anyone of education, so ashamed I am of my own ineptitude. Tell me, I said, did this power forsake you of a sudden, or little by little? Little by little, he replied. And when it was present with you, I asked, was it present through your having learnt something from me, or in some other way? I will tell you, Socrates, he said, what is incredible, upon my soul, yet true. For I never yet learnt anything from you, as you know yourself: but I made progress, whenever I was with you, if I was merely in the same house, without being in the same room, but more progress, when I was in the same room. And it seemed to me to be much more when I was in the same room and looked at you as you were speaking, than when	 I turned my eyes elsewhere: but my progress was far the greatest and most marked whenever I sat beside you and held and touched you. Now, however, he said, that condition has all oozed away. Such then, Theages, is the intercourse you would have with me: if God so wills, you will make very great and rapid progress, but otherwise, you will not. Consider, therefore, if it is not safer for you to be educated by one of those persons who have command themselves of the benefit which they bestow on mankind, rather than follow the course on which you may chance with me.