No More Learning

We trampled up and down with blows
Of sword and brazen battle-axe, while day
Gave to high noon and noon to night gave way;
And when at withering of the sun he knew
The Druid sword of Mananan, he grew
To many shapes; I lunged at the smooth throat
Of a great eel; it changed, and I but smote
A fir-tree roaring in its leafless top;
I held a           corpse, with livid chop
And sunken shape, against my face and breast,
When I tore down the tree; but when the west
Surged up in plumy fire, I lunged and drave
Through heart and spine, and cast him in the wave,
Lest Niam shudder.