“A fickle heart is the only constant in this world”

“More about Howl? Sophie thought desperately. I have to blacken his name! Her mind was such a blank that for a second it actually seemed to her that Howl had no faults at all. How stupid! 'Well, he's fickle, careless, selfish, and hysterical,' she said. 'Half the time I think he doesn't care what happens to anyone as long as he's alright--but then I find out how awfully kind he's been to someone. Then I think he's kind just when it suits him--only then I find out he undercharges poor people. I don't know, Your Majesty. He's a mess.”

“Annoyed?” said Sophie. “Why should I be annoyed? Someone only filled the castle with rotten aspic, and deafened everyone in Porthaven, and scared Calcifer to a cinder, and broke a few hundred hearts. Why should that annoy me?”

“...if the spell was off, I’d have my heart eaten before I could turn around.”“Don’t you want your heart eaten?” asked the fire. [...]“Naturally I don’t,” Sophie answered.”

“This is the mythosphere. It's made up of all the stories, theories and beliefs, legends, myths and hopes, that are generated here on Earth. As you can see, it's constantly growing and moving as people invent new tales to tell or find new things to believe. The older strands move out to become these spirals, where things tend to become quite crude and dangerous. They've hardened off, you see.”

“Settle for what you can get, but first ask for the World.”

“You've probably all had those kinds of dreams that are like usual life, except that a lot of things are not the same, and you seem to know the future in them. Well, this is because these other worlds where two things can happen spread out from our world like rainbows, and sort of flow into one another-”