They leave their coffins at night and they feed on the blood of the living.
10 seconds sound clip from the Dracula (1931) movie soundboard.
You can hear this line at 00:03:50 in the Blu-ray version of the movie.
Quote context
[...]
- Well, I'm sorry, but there's a carriage meeting me at Borgo Pass at midnight.
- Yes.
- Yes.
- Yes, that's where I'm going.
- Yes.
- No. You mustn't go there. We people of the mountains believe at the castle there are vampires!
- Dracula and his wives. They take the form of wolves and bats.
- They leave their coffins at night and they feed on the blood of the living.
- Oh, but that's all superstition. Why, I can't understand why...
- Look, the sun. When it is gone, they leave their coffins.
- But wait! I mean, just a minute, I... What I'm trying to say is that I'm not afraid.
- I've explained to the driver that it's a matter of business with me. I've got to go. Really.
[...]