Who Am I?

Who am I?
But a buckling twig on a giant tree,
Just a whisp of someone else's words.
I fall too soon, or fly too high.
Who am I?
Nothing not even the moisture in the air,
Nor the happiness of a child.
I fall too soon, or fly to high.
Who am I?
Be I the softness on your skin?
The radiance in a day? No.
I fall too soon, or fly too high.
Who am I?
Never the smile in the crowd,
Only a forgotten moment.
I fall to soon, or fly too high.

Who am I?