Nature must be gladsome when I was so happy.
Chapter 24 · Narrator
Context
Still euphoric from Rochester's proposal, Jane steps outside into a sunny morning and assumes that nature itself must share her joy.
Analysis
The auxiliary verb 'must' reveals Jane imposing her emotional state onto the external world rather than observing it—a textbook case of pathetic fallacy that Brontë makes visible as a conscious act. By having Jane assert what nature 'must' feel, the novel exposes the egocentrism of romantic happiness: Jane has become so absorbed in her own feelings that she cannot imagine the world operating independently of them.
Essay Tip
Support a thesis that Brontë uses pathetic fallacy ironically in this chapter—Jane's insistence that nature mirrors her joy is presented as a delusion, preparing readers for the stormy interruptions that will soon prove nature operates on its own terms.