Interestingly, as Othello prepares to kill Desdemona, he still believes he is using reason to make his decisions. He says, “It is the cause, it is the cause, my soul./ Let me not tell you, chaste stars,/ It is the cause” (V.ii.1-3). While he doesn't explain his reasons, he's sure he has one good enough to kill. This continues into a series of emotional jokes about how much he fears performing the necessary act. It is only in Othello's last set of lines that he admits that he was an overpowered fool