`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.'

Alice didn't think that proved it at all; however, she went on
`And how do you know that you're mad?'

`To begin with,' said the Cat, `a dog's not mad. You grant
that?'

`I suppose so,' said Alice.

`Well, then,' the Cat went on, `you see, a dog growls when it's
angry, and wags its tail when it's pleased. Now I growl when I'm
pleased, and wag my tail when I'm angry. Therefore I'm mad.'

`I call it purring, not growling,' said Alice.

`Call it what you like,' said the Cat. `Do you play croquet
with the Queen to-day?'

`I should like it very much,' said Alice, `but I haven't been
invited yet.'