This is the 46th segment of “Squarings” from Heaney’s collection Seeing Things (1991).
Like a flat stone skimmed at sunset
Or the irrevocable slipstream of flat earth
Still fleeing behind space.
Was music once a proof of God’s existence?
As long as it admits things beyond measure,
That supposition stands.
So let the ear attend like a farmhouse window
In placid light, where the extravagant
Passed once under full sail into the longed-for.