Answer:
What goes through a door but never goes in. And never comes out?
What is the freedom of birds and the pen of old men?
I cannot be felt, seen or touched. Yet I can be found in everybody. My existence is always in debate. Yet I have my own style of music.
What is weightless but it needs two person to hold it?
It can pierce the best armor and make swords crumble with a rub, yet for all its power It can't harm a wooden club.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?