Sokrates

"Xenophon notices briefly two other colloquies between Sokrates and Aristippus. The latter asked Sokrates, “Do you know anything good?” in order (says Xenophon) that if Sokrates answered in the affirmative and gave as examples, health, wealth, strength, courage, bread, &c., he (Aristippus) might show circumstances in which this same particular was evil; and might thus catch Sokrates in a contradiction, as Sokrates had caught him before."