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Iago is known as "Honest Iago." He tells Othello, that as a friend, he doesn't want to share his suspicions because it's not his place to do so. Furthermore, he reminds Othello that spreading idle gossip is not what he is known for: he is known instead, for his honesty. What rhetorical device is he using? Explain.
He is using Ethos. He is reminding Othello of his reputation as honest and straightforward.