Legendary riddle.

Question: Living I do not exist. Dead I am an inspiration. You always doubt me. But never reject me. I am what is given from old to young. Without me people would not learn mistakes. What am I?

Question: Tear one off and scratch my head. What once was red is black instead. What am I?

Question: What tastes better than it smells?

Question: What has a face and two hands?

Question: What goes in the water black and comes out red?

Question: What asks but never answers?