That night I never thought to sleep…I was transported in thought to the scenes of childhood; I dreamt that I lay in the red-room at Gateshead; that the night was dark, and my mind impressed with strange fears. The light that long ago had struck me into syncope, recalled in this vision, seemed glidingly to mount the wall…I lifted my head to look; the roof resolved to clouds…the gleam was such as the moon imparts to vapours she is about to sever. I watched her come…as though some word of doom were to be written on her disk…then, not a moon, but a white human form, shone in the azure, inclining a glorious brow earthward.

– Charlotte Bronte

Jane Eyre, Chapter 27. On the night after the day of Jane’s canceled marriage, she is troubled by dark supernatural dreams. She has a vision of being in the red room at Gateshead and she remembers all the fear of being imprisoned there. She looks up at the ceiling and it turns to clouds. Using a nature simile, she describes how there is a gleam like the moon gives to vapors she is about to divide. This foreshadows her parting with Mr. Rochester. The moon appears, it bursts through the cloud and is transformed into a white human form – that of her late mother with a message for Jane.