Answer:
I am lighter than air, but a hundred people cannot lift me. Careful, I am fragile. What am I?
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty. What am I?
What always goes to bed with its shoes on?
Part carbon, part water, I am poison to the fishes. Many falsely claim my name, I am the pause that refreshes. What am I?
Use me to reward good behavior.
What made Cyclops quit teaching?