Flogging a dead horse

[Norah Jones, Prettiest Thing]

Poetry is a sword of lightning ever unsheathed, which consumes the scabbard that would contain it.

[From Shelley's A Defense of Poetry]

[1843 - martes 13 y viernes 13 concatenados, un gato negro, tormenta

"The light gleams an instant, then it's night once more" (Pozzo in Waiting for Godot)]