“'And how many hours a day did you do lessons?' said Alice, in a hurry to change the subject.
'Ten hours the first day,' said the Mock Turtle: 'nine the next, and so on.'
'What a curious plan!' exclaimed Alice. 'That's the reason they're called lessons,' the Gryphon remarked: 'because they lessen from day to day.'
This was quite a new idea to Alice, and she thought it over a little before she made her next remark. 'Then the eleventh day must have been a holiday?'
'Of course it was,' said the Mock Turtle.”