Soon > [As soon] in place > there

2 His wicked books in haste he overthrew, 3 Not caring his long labours to deface,

deface > destroy

4 And, fiercely running to that lady true, 5 A murderous knife out of his pocket drew, 6 Which he thought, for villainous despite,

despite > malice

7 In her tormented body to imbrue:

imbrue > steep; defile; hence: plunge

8 But the stout damsel, to him leaping light,

stout > brave light > quickly

9 His cursed hand withheld, and mastered his might.