What Am I Riddles

Question: I am a teacher, yet I am not a human nor a robot.

Question: Four hang, four sprang, two point the way, two to ward off dogs, one dangles after, always rather dirty.

What am I?

Question: I can hurt and make people bleed when I'm on the dark side, but used in good ways and I can also help you. What am I?

Question: i am the most powerful force in the universe, u cannot see or feel me, but i can be seen in ones actions, i have nothing to do with religion. Everyone has some of me, but nobody has all of me, what am i...

Question: I am born through wrongful events, sometimes even despair. I show that deep down you care. Although I give you strength, I am but a flaw. I can even turn a man into a monster, a monster that even his own loved ones saw. What am I?