LODOVICO
O thou Othello, thou wert once so good,
Fall'n in the practice of a damnèd slave,
What shall be said to thee?
OTHELLO
Why, anything.
An honorable murderer, if you will,
For naught I did in hate, but all in honor. (5.2.342-347)
Yikes! Othello believes that murdering Desdemona was an "honourable" thing to do since he thought Desdemona was cheating on him. (Seems like Shakespeare is inviting us to disagree with Othello, wouldn't you say?) To the last, Othello wants to be identified as an honorable man but Lodovico asserts that Othello, the man who was "once so good" has "fall'n."