Victor Frankenstein’s creation speaking in Mary Shelley’s Frankenstein pretty much sums up my testing approach:
I will revenge my injuries: if I cannot inspire love, I will cause fear; and chiefly towards you, my arch-enemy, because my creator, do I swear inextinguishable hatred. Have a care: I will work at your destruction, nor finish until I desolate your heard so that you shall curse the hour of your birth.
Nineteenth century curses are the best.
Here’s a statement of work from Frankenstein himself later in the book:
My present situation was one in which all voluntary thought was swallowed up and lost. I was hurried away by fury; revenge alone endowed me with strength and composure; it moulded my feelings and allowed me to be calculating and calm, at periods when otherwise delirium or death would have been my portion.