This discussion is fascinating and invaluable (and a very good rejoinder to Orr’s somewhat presumptuous essay—Why not ASK a few poets about their epigraph usage?). However, I don’t see anyone articulating the reason I often use an epigraph: to acknowledge inspiration. I am often struck by a line of phrase in a poem that leads me to create a poem of my own. It’s a combination of source acknowledgment and homage.