The sun that rose on our sorrow this morning guards us in its course. Until it sets to-night, that monster must retain whatever form he now has. He is confined within the limitations of his earthly envelope. He cannot melt into thin air nor disappear through cracks or chinks or crannies. If he go through a doorway, he must open the door like a mortal.
—Johnathan Harker's journal, Dracula, Chapter 22