Answer:
What is it that you must give before you can keep it.
Until I am measured I am not known, Yet how you miss me when I have flown.
We are few to the wise; We are abundant to the drunken; We can calm the beast and are precious to the child; We can devour the heart, without piercing the skin
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
Although I'm not an insect, some people found me very difficult to exterminate. They called me something like 'insane priest.' The first half of my name means the same as 'scrape,' & my last three letters are a metal. Who am I?
I can only be played on a windy day