Had I not seen the repose in the first place, and the gladness that stole over it just ere the final dissolution came, as realisation that the soul had been won, I could not have gone further with my butchery.

– Bram Stoker

Dracula, Chapter 27. Vampire slayer Professor Van Helsing admits to feeling bad about his butchery of the three vampiresses. He says he could not have continued with his mission had he not seen in the dead face that the soul had been saved.