Answer:
I fly through the air on small feathered wings, seeking out life and destroying all things.
I'm the source of all emotion, but I'm caged in a white prison.
A building where people and stories are on stage
I am the outstretched fingers that seize and hold the wind. Wisdom flows from me in other hands. Upon me are sweet dreams, my merest touch brings laughter
I am a box that holds keys without locks, yet they can unlock your soul.
What is so fragile that saying its name breaks it?