Answer:
I am as hard as metal, yet as flimsy as glass. I shine like a star, yet I am only a rock. What am I?
I need to be taken before you can have me. What am I?
I am a tale in childrens' minds. Though an illusion, I occur every night. I give them a fantasy, I give them a fright. What am I?
What is light as a feather but even the strongest man cannot hold it for more than a few minutes?
I am what brings things together. Without me everything you see would be a total mass or debris everywhere. What am I?
What made Cyclops quit teaching?