1: Why won't you help me? Why must you always speak in riddles?
2: Because I be, what I be. I would tell you what you want to know if I could, mum, but I be a cat. And no cat anywhere, ever gave anyone a straight answer.
I mean.."closer" in terms that it is an animated movie..This should give it away:
"I have forgotten that men cannot see Unicorns. If men no longer know what they're looking at, there may be other unicorns in the world yet, unknown, and glad of it."
Replies
Mirrormask?
"Oh, she'll kill me one day or another. But she will remember forever that I caught her, and I held her prisoner. So there's my immmortality.."
1: "The harpy's as real as you are, and just as immortal. And she was just as easy to catch, if you want to know."
2: "Do not boast, old woman. Your death sits in that cage, and she hears you."
If Secret of Nimh is closer, maybe it's an animated version of that myth?
"I have forgotten that men cannot see Unicorns. If men no longer know what they're looking at, there may be other unicorns in the world yet, unknown, and glad of it."