I love your description of an introvert!

He opens his mouth
but the words
don't come out.
He writes them down in the hope they say something.
To someone.
Somewhere.
Because then their light
may filter into his world,
and perhaps the sweet smell of extroversion
will snap him out of his introverted shell.

This one I like most. They are only human who also wants to be heard and wants to be known. Such a lovely piece Scott!