Good Riddles

Question: What kind of math do Owls like?

Question: The mouse that can walk is Mickey. But the duck that can walk is who?

Question: A man leaves his cabin and travels 100 meter north, 100 meters west, and 100 meters south just to arrive back at his home. He sees a bird. What kind of bird is it?

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: What goes up but never goes down?