Answer:
A beggar's brother went out to sea and drowned. But the man who drowned had no brother. Who was the beggar to the man who drowned?
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you.
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
What do you have when you're sitting down that you don't have when you're standing up?
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
If you can spot one of these eastern warriors, it means they're not doing their job right.