Man still must err, while he doth strive.

MEPHISTOPHELES

I thank you; for not willingly
I traffic with the dead, and still aver
That youth's plump blooming cheek I very much prefer.
I'm not at home to corpses; 'tis my way,
Like cats with captive mice to toy and play.

THE LORD

Enough! 'tis granted thee! Divert
This mortal spirit from his primal source;
Him, canst thou seize, thy power exert
And lead him on thy downward course,
Then stand abash'd, when thou perforce must own,
A good man in his darkest aberration,
Of the right path is conscious still.

MEPHISTOPHELES

'Tis done! Full soon thou'lt see my exultation;
As for my bet no fears I entertain.
And if my end I finally should gain,
Excuse my triumphing with all my soul.
Dust he shall eat, ay, and with relish take,
As did my cousin, the renowned snake.

THE LORD