This may come as a surprise to you, but I have always wanted to be a teacher... Actualy, Perhaps it isn't that surprising.

You naive child... If you leave the RUINS... They... ASGORE... Will kill you. I am only protecting you, do you understand?

What a miserable creature, torturing such a poor, innocent, youth... Ah, Do not fear, my child. I am Toriel. Caretaker of the ruins.