“Be no longer, then, thus negligent in this matter, consider yourself with more attention, and let not slip the occasions of serving the Republic, and of rendering it, if possible, more flourishing than it is. This will be a blessing, whose influence will descend not only on the other citizens, but on your best friends and yourself.”
One day Aristippus proposed a captious question to Socrates, meaning to surprise him; and this by way of revenge, for his having before put him to a stand: but Socrates answered him warily, and as a person who has no other design in his conversations than the improvement of his hearers.
The question which Aristippus asked him was whether he knew in the world any good thing, and if Socrates had answered him that meat, or drink, or riches, or health, or strength, or courage are good things, he would forthwith have shown him that it may happen that they are very bad. He therefore gave him such an answer as he ought; and because he knew very well that when we feel any indisposition we earnestly desire to find a remedy for it, he said to him: “Do you ask me, for example, whether I know anything that is good for a fever?” “No,” said Aristippus. “Or for sore eyes?” said Socrates. “Neither.” “Do you mean anything that is good against hunger?” “Not in the least,” answered Aristippus. “I promise you,” said Socrates, “that if you ask me for a good thing that is good for nothing, I know no such thing, nor have anything to do with it.”