A vampire is a being that lives after its death by drinking the blood of the living. It must have blood or it dies.
12 seconds sound clip from the Dracula (1931) movie soundboard.
You can hear this line at 00:46:11 in the Blu-ray version of the movie.
Quote context
[...]
- A vampire casts no reflection in the glass. That is why Dracula smashed the mirror.
- I don't mean to be rude, but that's the sort of thing I'd expect one of the patients here to say.
- Yes, and that is what your English doctors would say, your police.
- The strength of the vampire is that people will not believe in him.
- Professor, vampires only exist in ghost stories.
- Renfield? What are you doing there? Come here.
- Did you hear what we were saying?
[...]