Travel a mile and I will change, travel a million and I will end as I started. What am I?

I have eighty-eight keys but cannot open a single door. What am I?

Lighter than what I'm made of, more of me is hidden than is seen. What am I?

Guided, I am scraping along, leaving behind my snow-white dust against that which I am scraping, for when I am scraping, I must. What am I?

I have an eye but cannot see. I'm faster than any man alive and have no limbs. What am I?

I can be dropped from the tallest of buildings and survive, but drop me from the smallest ship and I won't. What am I?

He has one and a person has two, a citizen has three and a human being has four, a personality has five and an inhabitant of earth has six. What am I?

I am seen in the water and in the sky. I am in the rainbow and a jay's feather. What am I?

I'm where yesterday follows today and tomorrow is in the middle. What am I?

When I point up it's bright, but when I point down it's dark. What am I?

Forwards I am heavy, but backwards I am not. What am I?

Take away my first letter and I remain the same. Take away my last letter and I remain unchanged. Remove all my letters and I'm still me. What am I?

Without a bridle, or a saddle, across a thing I ride a-straddle. And those I ride, by help of me, though almost blind, are made to see. What am I?

I warn you about meetings, and I assist you in your life, I can help you do most of your work, unless I have a bug. What am I?

I can be long, or I can be short. I can be grown, and I can be bought. I can be painted, or left bare. I can be round, or square. What am I?

Everyone has me but nobody can lose me. What am I?

I have four legs, a back, but no head. What am I?

Although I'm far from the point, I'm not a mistake. I fix yours. What am I?

I love to dance and twist and prance, I shake my tail, as away I sail, wingless I fly into the sky. What am I?

I defend without weapons, stand without legs, wound without force, and I am harder to fight than to kill. What am I?