I told him I was going to betray you, and betray Lyra, and he believed me because I was corrupt and full of wickedness; he looked so deep I felt sure he'd see the truth. But I lied too well. I was lying with every nerve and fiber and everything I'd ever done...I wanted him to find no good in me, and he didn't. There is none.

The speaker describes a moment of deliberate self-abasement: they present themselves as irredeemably “corrupt” so convincingly that even someone who “looked so deep” accepts the performance as truth. The passage explores how lying can become total—an act involving “every nerve and fiber”—until it feels indistinguishable from identity. It also dramatizes a paradox of moral judgment: the speaker wants to be found wholly bad, and the other person’s failure to detect “good” becomes both proof of the lie’s success and a wound that the speaker converts into self-condemnation. The final sentence (“There is none.”) reads as despairing self-erasure, suggesting guilt, shame, and the fear that repeated wrongdoing has emptied the self of virtue.