Why, "Where does the Sky Begin?"

In one of my classes at Westmont (oh so long ago) a professor told a story that made great impression on my young mind. He said a father was tucking his young daughter in bed one night. She looked up and asked him, "Daddy, where does the sky begin?" He looked at her lovingly and replied, "Where your lungs do."
I liked the story so much that in a later art class, where we were making silk screen prints, I cut out capital block letters to fill the page with the question and answer. I used yellow paint for the background. Because it needed something I added a second color with thin blue lines forming a kind of triangle-vertical, horizontal and diagonal lines intersecting.
In a way it has to do with the first breath breathed into Adam by God Himself. We're all still taking one breath at a time until our last. We are surrounded by the daily miracle of a breathable atmosphere and we think nothing of it.
Where does the sky begin? The bright blue ever changing color that blesses us everyday of our brief lives. It indeed begins with our rising and falling lungs. "We are fearfully and wonderfully made."