Underlying this work is a consideration of the idea of human potential: its achievement, or non-achievement. What does it mean to err, to misstep, not to see? Is what seems like unlimited possibility reachable, either by effort or by destiny? The angel in Western literature and art serves as metaphor in these ruminations. I think of the angelic as both beyond and within human existence. Milton and Dante are the sources which have helped to generate the imagery. And, from Dante,

“Nel mezzo del cammin’ di nostra vita mi ritrovai per una selva oscura, che la diritta via era smarrita.”

(Midway in the journey of our life I found myself in a dark wood, for the straight way was lost.)

I suppose that would apply.