Who said "I do so hate to go to sleep with an unsolved problem!"?

This quote is attributed to Alice.

I do so hate to go to sleep with an unsolved problem! - Alice

"I do so hate to go to sleep with an unsolved problem!"

Alice Perseverance

Character in Alice's Adventures in Wonderland

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"Who in the world am I? Ah, that's the great puzzle."

"Curiouser and curiouser!"

"It would be so nice if something made sense for a change."

"How queer everything is today!"

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."