Answer:
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
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 has 4 eyes but can’t see?
I have a neck but no head. I have a body but no arm. I have a bottom but no leg.
What gets wet while drying?
When is it bad luck to see a black cat?