• Heraclitus: “Eyes are surer witnesses than ears,” [Quoted by Polybius in Histories 12.27:1]
• Herodotus: [On Candaules to Gyges re his wife's alleged beauty] “Well, a man always believes his eyes better than his ears” [Histories 1.8]
• Polybius: “To see an operation with one's own eyes is not like merely hearing a description of it. It is, indeed, quite another thing; and the confidence which such vivid experience gives is always greatly advantageous” [Histories 20.12.8]
• Polybius: “he [Timaeus] entirely refrained from looking at things with his own eyes, and devoted himself to learning by hearsay [My insert: from documents]. [Histories 12.27]
• Seneca the Younger: “I shall therefore send to you the actual books… shall mark certain passages, so that you can turn at once to those which I approve and admire. Of course, however, the living voice and the intimacy of a common life will help you more than the written word. You must go to the scene of action, first, because men put more faith in their eyes than in their ears” [Moral Letters to Lucilius; Ad Lucilium Epistulae Morales 6.5]
• Philo: “to all those who are willing, after a careful examination and investigation, using their eyes in preference to their ears as a trustworthy witness” [De Confusione Linguarum 57]
Dio Chrysostom was a famous Greek historian of the Roman Empire. He wrote in the 1st century that...