Answer:
What can travel around the world while staying in a corner?
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word.
I am always in front of you but you will never see me
found at the back of the book.
What has legs but doesn't walk?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.