Answer:
What is so delicate that even mentioning it breaks it?
It is in every mountain, it's not in any hill, it's not in all the world, and yet it's in the mill.
What ends in E, starts with E and has a letter inside it?
The land was white the seed was black. It'll take a good scholar to riddle me that.
Who plays when he works and works when he plays?
Why is the letter B always cool?