Othello, along with other characters in the play, depend on only their eyes and with that they jump to major conclusions.There are many instances in the book where there is hidden confusion, meaning the character believes on only what his or her eyes tell him, hence, Looks can be very deceiving.
Iago has noticed Othello's tendency to insecurity and overreaction, but not even Iago imagined Othello would go as far into jealousy as he did.
Jealousy forces Othello's mind so tightly on one idea, the idea that Desdemona has betrayed him with Cassio, that no other assurance or explanation can penetrate.
For Othello, seeing is believing, and proof of the truth is visual.
To "prove" something is to investigate it to the point where its true nature is revealed.
Once again, he speaks with calm rationality, judging and condemning and finally executing himself.
Prejudice Iago's scheme would not have worked without the underlying atmosphere of racial prejudice in Venetian society, a prejudice of which both Desdemona and Othello are very aware.
Such an obsession eclipses Othello's reason, his common sense, and his respect for justice.
Up to the moment he kills Desdemona, Othello's growing jealousy maddens him past the recall of reason.
In Othello, the major themes reflect the values and the motivations of characters.
Love In Othello, love is a force that overcomes large obstacles and is tripped up by small ones. It provides Othello with intensity but not direction and gives Desdemona access to his heart but not his mind.