As humans we respond to symbols. We express divine Beauty and insight in our art. If there is a preponderance of art depicting angels with wings, obviously this symbolizes something real within the collective consciousness. Angels appear to humans according to human capacity to accept and understand the appearance. The angels inspire, and that is what is left in our heart after an angel experience.
It is only in silence and through silence that we can interiorize what is beyond our comprehension and apprehend the power of a design larger than ourselves: it is the medium of transcendence.