Dracula by Bram Stoker Chapter 5 Page 20

yesterday I have a sort of empty feeling. Nothing in the world seems of sufficient importance to be worth the doing. As I knew that the only cure for this sort of thing was work, I went amongst the patients. I picked out one who has afforded me a study of much interest. He is so quaint that I am determined to understand him as well as I can. Today I seemed to get nearer than ever before to the heart of his mystery.

I questioned him more fully than I had ever done, with a view to making myself master of the facts of his hallucination. In my manner of doing it there was, I now see, something of cruelty. I seemed to wish to keep him to the point of his madness, a thing which I avoid with the patients as I would the mouth of hell.

(Mem., Under what circumstances would I not avoid the pit of hell?)