Othello is gullible to such an extent that he listens to Iago who appears to be paranoid to the readers and does not bother take time to analyse some of his words. Thus Othello’s tragedy was caused by his credulity to a greater extent.
Othello’s credulity is the prime cause of his tragedy because he does not bother to analyse what Iago says to him; rather he simply takes everything as it is. In Act 3: Scene 3, the readers learn that Iago is paranoid; he is always suspicious and acts to his suspicions before collecting sufficient proof. This is evident when Iago says: “As I confess it is my nature’s plaugue / To spy into abuses, and oft my jealousy / Shapes faults that are not-.” (Act 3: Scene 3: Line 149-151)
However, Othello is unable to realise this, it further shows his gullibility and dishearteningly. Othello persuades Iago to tell him whatever he is afraid to disclose. Othello lacks any form of scepticism towards Iago’s claims and in the end he is manipulated in killing his wife. Therefore, Othello fell into Iago’s trap because of his gullible