Answer:
A man shot two arrows at its center and missed both times, but using a sword swung once at its center and hit it twice.
The more of it there is, the less you see.
Used left or right, I get to travel over cobblestone or gravel. Used up, I vie for sweet success, used down, I cause men great duress.
A beacon from home to guide your way. It can be a lifesaver on a stormy day. What is it?
When there is fire in me then I am still cold. When I own your true love’s face then you will not see me. To all things I give no more than I am given. In time I may have all things, and yet I can keep nothing.
As round as an apple. As deep as a cup. All the king's horses can't pull it up.