Answer:
Up on high I wave away but not a word can I say.
The man who made it didn't need it. The man who bought it didn't use it. The man who used it didn't want it.
Where humans breath liquid?
Of these things - I have two. One for me - and one for you. And when you ask about the price, I simply smile and nod twice.
It comes only before, it comes only after. Rises only in darkness, but rises only in light. It is always the same, but is yet always different.
I have two eyes in the front and a lot of eyes on my tail