'But I might ask you as profitably why you've never seen fit to invent airborne vehicles? One small stolen airplane would have spared you and me a great deal of difficulty!' 'How would it ever occur to a sane man that he could fly?' Estraven said sternly. It was a fair response, on a world where no living thing is winged.
( Ursula K. Le Guin )
[ The Left Hand of Darkness ]
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