'When you say "hill,"' the Queen interrupted, 'I could show you hills, in comparison with which you'd call that a valley.' 

'No, I shouldn't,' said Alice, surprised into contradicting her at last:  'a hill CAN'T be a valley, you know.  That would be nonsense--' 

The Red Queen shook her head, 'You may call it "nonsense" if you like,' she said, 'but I'VE heard nonsense, compared with which that would be as sensible as a dictionary!' 

Alice curtseyed again, as she was afraid from the Queen's tone that she was a LITTLE offended:  and they walked on in silence till they got to the top of the little hill.