Look, I admit he isn't a particularly good-looking specimen at present, but don't forget, one's facial character is built up by what lies behind it... in the brain.

9 seconds sound clip from the The Curse of Frankenstein movie soundboard.

You can hear this line at 00:32:47.492 in the Blu-ray version of the movie.

Quote context

[...]

- Victor, I appeal to you. Stop what you're doing before it's too late.

- But what am I doing? I'm harming nobody. Just robbing a few graves. What doctor or scientist doesn't? How else can we learn the complexities of the human animal?

- Doctors rob for the eventual good of mankind.

- This can never end in anything but evil.

- Why do you say that?

- Look, I admit he isn't a particularly good-looking specimen at present, but don't forget, one's facial character is built up by what lies behind it... in the brain.

- A benevolent mind, and the face assumes the patterns of benevolence.

- An evil mind, then an evil face.

- For this the brain of a genius will be used.

- When that brain starts to function within the frame, then the face and features will assume wisdom and understanding.

[...]