Alice in Wonderland

I can't go back to yesterday because I was a different person then.
― Lewis Carroll, Alice in Wonderland

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.
― Lewis Carroll, Alice in Wonderland

Mad Hatter: Why is a raven like a writing-desk?
Have you guessed the riddle yet? the Hatter said, turning to Alice again.
No, I give it up, Alice replied: What’s the answer?
I haven’t the slightest idea, said the Hatter
― Lewis Carroll, Alice in Wonderland