“And we are so miserably afraid of the light, all of us.”
Mrs. Alving uses light as a metaphor for confronting inherited beliefs, arguing that people can remain frightened of examining ideas that continue to govern them.
Source details
Ghosts, Act II, R. Farquharson Sharp public-domain translation, Project Gutenberg #2467. Mrs. Alving says “And we are so miserably afraid of the light, all of us” immediately after describing inherited “old dead ideas” and beliefs as ghosts. The light is a dramatic metaphor within a conflict over family, duty and conventional belief, not a clinical claim.