Answer:
Everyone has me except for a few. You may not be able to identify me but I can always identify you. What am I?
What is so fragile that saying its name breaks it?
If you have me you want to share me. If you share me you don't have me. What am I?
I make you weak at the worst of all times. I keep you safe, I keep you fine. I make your hands sweat and your heart grow cold. I visit the weak, but seldom the bold. What am I?
I tremble at each breath of air and yet can heaviest burdens bear.
What made Cyclops quit teaching?