"Calm down? Think about what I've done?" His eyes glint, flames reflected in the black depths. "I'm not a child, goat. You can't keep me here forever."

Toriel, he thinks, will have to rest sometime; magic is surely a drain. And he is nothing if not determined, edging upon brutish at times. Dumb strength can succeed where all the intelligence of the world fails; but tempered with his cleverness, he's sure that he will win eventually.

All it takes is time...

"Prey shouldn't go up against a predator. The results are just sad."