Answer:
It flies when it's on and floats coming off.
My love, when I gaze on thy beautiful face. Careering along, yet always in place, the thought has often come into my mind. If I ever shall see thy glorious behind.
Fatherless and motherless. Born without sin, roared when it came into the world. And never spoke again.
You use a knife to slice my head. And weep beside me when I am dead.
Sleeping during the day, I hide away. Watchful through the night, I open at dawn's light. But only for the briefest time, do I shine. And then I hide away. And sleep through the day.
What is so fragile that saying its name breaks it?