The edge of earth and bread.
I reach for the sky, but clutch to the ground. Sometimes I leave, but I am always around
What is it that you must give before you can keep it
It's tough as nails, Or soft as snow. People use it for their rink, Some just put in their drink.
Four kings of whom I am one lord. Often on deck but never on board. Though I have a large heart, I am always seen at war. During which I always wear a suit, but never a suit of armor. Who or what am I?
Man's most important invention.