And as for revolting against nature, haven't we done so already and succeeded?

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

You can hear this line at 00:15:17.395 in the Blu-ray version of the movie.

Quote context

[...]

- Build what?

- The most complex thing known to man: Man himself.

- We must create a human being, a man with perfect physique, the hands of an artist, with a matured brain of a genius.

- We can do it. Don't you see?

- No, I don't.

- What you're saying is nonsense, a revolt against nature. Such a thing could only end in evil.

- Come, what's the matter with you? You haven't shown any scruples up to now.

- And as for revolting against nature, haven't we done so already and succeeded?

- Isn't the thing that's dead supposed to be dead for all time? Yet we brought it back to life.

- We hold in the palms of our hands such secrets that have never been dreamed of.

- Where nature puts up barriers to confine the scope of man, we've broken through those barriers! There's nothing to stop us now.

- What is it you want to do?

[...]