George Orwell said this quote

For the rest, she grew used to the life that she was leading - used to the enormous sleepless nights, the cold, the dirt, the boredom, and the horrible communism of the Square. After a day or two she had ceased to feel even a flicker of surprise at her situation. She had come, like everyone about her, to accept this monstrous existence almost as though it were normal. The dazed, witless feeling that she had known on the way to the hopfields had come back upon her more strongly than before. It is the common effect of sleeplessness and still more of exposure. To live continuously in the open air, never going under a roof for more than an hour or two, blurs your perceptions like a strong light glaring in your eyes or a noise drumming in your ears. You act and plan and suffer, and yet all the while it is as though everything were a little out of focus, a little unreal. The world, inner and outer, grows dimmer till it reaches almost the vagueness of a dream.