Claudio’s first tragic flaw is his gullibility. In Act two, scene 1, Don John states, “Signor, you are very near my brother in his love. He is enamoured on Hero. I pray you dissuade him from her. / Claudio: How do you know he loves her? / Don John: I heard him swear his affection. / Claudio: ‘Tis certain so; the prince woos for himself. / Farewell, therefore, Hero.” (lines 151-152, 156, 162, 170, pages 22-23) This shows that Claudio is gullible because he quickly took Don John’s words as fact without having any other proof that Hero was in love with Don Pedro. Knowing that Don John has a tendency to lie and decieve others, Claudio should have checked with other accounts of the event. Additionally, he is tricked into thinking that Hero has
