As Iago succeeds in convincing Othello that Desdemona is guilty of adultery, it leads to the climax of the play. And so Othello must face emotions he can't deal with. His jealousy drives him insane, and his judgement is replaced with anger and hate. At this time, the reader notices that the death of Desdemona is inevitable. Othello's love for Desdemona is great. His love, must be to him the heaven where either he must live or bear no life. If such a passion as jealousy seizes him, it will swell into a well-night uncontrollable flood. He will press for immediate conviction or immediate relief. Being convinced he will act with the authority of a judge and the swiftness of a man in mortal pain. Othello acted with unjustifiable precipitance and violence; no one, I suppose denies that.

             Othello was trustful and thorough in his trust. He put entire confidence in the honesty of Iago, who had not only been his companion in arms, but, as he believed, had just proved his faithfulness in the matter of the marriage. This confidence was misplaced, and we happen to know it; but it was no sign of stupidity in Othello. For his opinion of Iago was the opinion of practically everyone who knew him: and that opinion was that Iago was before all things "honest", his very faults being those of excess in honesty. This being so, even if Othello had not been trustful and simple, it would have been quite unnatural for him to be unmoved by the warnings of so honest a friend, warnings offered with extreme reluctance and manifestly from a friend's sense of duty. They would have troubled any man.

             Iago does not bring these warnings to a man who had lived with a wife for months and years and knew her very well. Nor is there any ground in Othello's character for supposing that, if he had been such a man, he would have felt and acted as he does in the play. But he was newly married; in the circumstances he cannot have known much of Desdemona before his marriage; and further he was conscious of being under the spell of a feeling which can give glory to the truth but can also give it to a dream.