It's very simple. As long as I can make my interests his interests, he is not going to betray me.

9 seconds sound clip from the The Bitter Tea of General Yen movie soundboard.

You can hear this line at 00:52:55 in the Blu-ray version of the movie.

Quote context

[...]

- Come on, gigolo.

- Don't forget your rings, Miss Davis.

- How could you employ a man like that?

- Jones has everything I want of the Western mind.

- I don't follow you.

- It's very simple. As long as I can make my interests his interests, he is not going to betray me.

- But your Dr. Strike is unreliable as a friend, and also as a lover.

- He'll betray you every time for his God.

- The subtlety of you Orientals is very much over-estimated.

- I can't get the connection.

[...]