Answer:
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
Although my cow is dead, I still beat her. What a racket she makes!
I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
I always murmur but never talk. Always run but never walk. I have a bed but never sleep, have a mouth but never speak. What am I?