No More Learning

LXXVIII
"As serpent, by the pointed spear pinned down,
Fixes his teeth in it, with fruitless spire;
Or as the mastiff runs towards a stone,
Which has been flung by some wayfaring wight,
And gnaws it in his rage, nor will be gone
Until he venge himself; 'tis so the knight,
Than any mastiff, any serpent, worse
Offends Drusilla's cold and           corse.