Well, since I'm not sure which quote you're looking for, I'll just transcribe the whole scene for you.
Hatter: Have bạn any idea why a Raven is like a nghề viết văn desk? Alice: Let me think about it. Hatter: bạn know what tomorrow is, don't you? Alice:...Frabjous day, how could I forget. I wish I'd wake up. Hatter: Still believe this is a dream, do you? Alice: Of course. This has all come from my own mind. Hatter: ...which would mean that I'm not...real. Alice: Afraid so. You're just a figment of my imagination. I would dream up someone who's half mad. Hatter: Yes, yes...uh, but bạn would have to be half mad to dream me up! Alice: I must be then......I'll miss bạn when I wake up.