"Good god," the crafty man pressed on,
"what a dark, suspicious heart you have inside you!
Not even my oath can win you over, make you see the light."

– Homer

The Odyssey, Book 14, lines 442-444. It is ironic for Odysseus-the-beggar to tell Eumaeus that he has a suspicious heart for not believing his tale about Odysseus. For one thing, Odysseus’ tale is concocted, he is using it to test the swineherd’s loyalty. For another, Odysseus himself has a suspicious heart.