- What does he mean?
- I wish I knew.

4 seconds sound clip from the Murders in the Rue Morgue (1932) movie soundboard.

You can hear this line at 00:10:19.036 in the Blu-ray version of the movie.

Quote context

[...]

- Heresy!

- Heresy? Do they still burn men for heresy? Then burn me, monsieur. Light the fire. Do you think your little candle will outshine the flame of truth?

- Do you think these boards and curtains are my whole life? They are only a trap to catch the pennies of fools.

- My life is consecrated to a great experiment. I tell you, I will prove your kinship with the ape.

(audience chattering)

- Erik's blood shall be mixed with the blood of man.

- What does he mean?

- I wish I knew.

- Mesdames et messieurs, if any of you wish to make the acquaintance of Erik, come forward.

- There's no need to be afraid. He is behind bars and cannot hurt you.

- Let's go up.

- Oh, no, Pierre, I'm afraid.

- I'm not afraid.

- He likes you, Camille. Look, he wants your bonnet.

[...]