„When we were living in Colorado there was snowfall. Our cat — I’m a cat man — wanted to get out of the house so I opened a door for him but he wouldn’t leave. Just kept on crying. He’d seen snow before and I couldn’t understand it. I kept opening other doors for him and he still wouldn’t leave. Then Ginny said, «Oh, he’s looking for a door into summer». I threw up my hands, told her not to say another word, and wrote the novel «The Door Into Summer» in 13 days.“

— Robert A. Heinlein

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„When Jace opened the greenhouse door, the scent hit Clary, soft as the padded blow of a cat's paw…“
— Cassandra Clare
„…when I went out I tried to push the door instead of pulling it. 'Pull it, mate,' said someone, and I had to obey. I nearly tripped over a footscraper and, the door closed, had the impression of loud laughter. The vile blunt-razor-blade wind blew hard from my sister’s house. I felt ashamed and furious. In the East there was politeness, doors opened the right way, there were no footscrapers.“
— Anthony Burgess
„But I don’t want to go among mad people," Alice remarked."Oh, you can’t help that," said the Cat: "we’re all mad here. I’m mad. You’re mad.""How do you know I’m mad?" said Alice."You must be," said the Cat, "or you wouldn’t have come here.“
— Lewis Carroll
„Let the doors be shut upon him, that he may play thefool no where but in's own house.“
— William Shakespeare