"The glamour of inexperience is over your eyes," he answered; "and you see it through a charmed medium: you cannot discern that the gilding is slime and the silk draperies cobwebs; that the marble is sordid slate, and the polished woods mere refuse chips and scaly bark."
Chapter 20 · Edward Rochester
Context
Jane and Rochester are walking in the garden at dawn after Mason's departure. Jane calls Thornfield a 'splendid mansion,' and Rochester responds by telling her that her inexperience prevents her from seeing the house's true nature.
Analysis
Rochester's cascade of metaphors progressively degrades each element of wealth Jane admires—gilding becomes slime, silk becomes cobwebs, marble becomes slate—but the degradation is not random; each substitution involves something originally valuable being revealed as worthless or disgusting. The phrase 'charmed medium' suggests Jane is under a spell of naïveté that beautifies corruption, positioning her innocence itself as a kind of blindness he must cure.
Essay Tip
Support a thesis that Rochester's attempt to disillusion Jane is self-serving—by insisting she cannot see Thornfield's truth, he positions himself as the only reliable interpreter of reality, which gives him narrative authority over her even as he is actively lying about Bertha.