It is the cause, it is the cause, my soul,
Let me not name it to you, you chaste stars!
It is the cause.

– William Shakespeare

Othello, Act 5, Scene 2. Othello enters Desdemona’s bed chamber with the intention of killing her, insisting to himself that his cause is right and he is delivering justice. Her crime is so terrible that he cannot even name it to the stars, which he personifies as "chaste." Othello is in serious denial here, unable to accept that he is murdering his wife not out of any just cause but because of his extreme jealousy.