Answer:
What starts with a 'T', ends with a 'T', and has T in it?
What is often returned, but never borrowed/
I'm the source of all emotion, but I'm caged in a white prison.
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
A morbidly-named body of water
What is so fragile that saying its name breaks it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?