The Caterpillar and Alice looked at each other for some time in silence: at last the Caterpillar took the hookah out of its mouth, and addressed her in a languid, sleepy voice.
`Who are you?’ said the Caterpillar.
This was not an encouraging opening for a conversation. Alice replied, rather shyly, `I–I hardly know, sir, just at present– at least I know who I was when I got up this morning, but I think I must have been changed several times since then.’
`What do you mean by that?’ said the Caterpillar sternly. `Explain yourself!’
`I can’t explain myself, I’m afraid, sir’ said Alice, `because I’m not myself, you see.’
`I don’t see,’ said the Caterpillar.
`I’m afraid I can’t put it more clearly,’ Alice replied very politely, `for I can’t understand it myself to begin with; and being so many different sizes in a day is very confusing.’
(Lewis Caroll, Alice in Wonderland)