“It is wonderful how quickly you get used to things, even the most astonishing.”
Nesbit’s narrator humorously observes how quickly the children normalize the impossible once a magical creature becomes part of their ordinary conversation.
Source details
Five Children and It, Chapter I, “Beautiful as the Day,” Project Gutenberg #17314. The narrator observes how quickly the children become accustomed to the astonishing after they begin conversing with the Psammead. This is playful children’s-fantasy narration rather than an empirical psychological claim about adaptation.