You might have thought about that before you threatened her.

3 seconds sound clip from the Isle of the Dead (1945) movie soundboard.

You can hear this line at 00:47:00.318 in the Blu-ray version of the movie.

Quote context

[...]

- General, you're right. There is something here more dangerous than septicemic plague.

- More dangerous as far as Thea is concerned. And that's your own crazy thoughts about her.

- You can say whatever you like.

- The only safe thing for Thea is to get her off the island. We'll leave in the morning. I'll row you over.

- You can't go. You'll spread the plague.

- You might have thought about that before you threatened her.

- Why can't you come with us?

- I've told you.

- But even if it's true, even if there's no chance of your getting well, it would still be better if you were with us.

- You and Oliver don't know where you'll be or what will happen.

- You couldn't shield me against what I fear most. I don't dare go with you.

[...]