Ellen Grange: I wonder if they'll stay on the reservation this time.
Jess Remsberg: Why should they?

- James Garner (as Jess Remsberg) in Duel at Diablo (1966)

Ellen Grange: They all think that any decent woman would prefer to die than live as an Apache squaw. Maybe they're right.
Jess Remsberg: Death comes soon enough. Anyone who hurries it is a damn fool.

- James Garner (as Jess Remsberg) in Duel at Diablo (1966)

Ellen Grange: You're going to kill me.
Chata: No. You will be alive when I bury you in the grave of my son.

- John Hoyt in Duel at Diablo (1966)

Chata: You white eyes want us all dead, but when I die, it will not be as a reservation Indian. I will die Apache - killing my enemies.

- John Hoyt in Duel at Diablo (1966)

Willard Grange: You mean you like living with a bunch of savages?
Ellen Grange: You don't understand.
Willard Grange: Well, no, I don't understand. Lots of white women have been grabbed off by an Indian, and many a decent one of them would have killed herself before she let them turn her into an Indian squaw.
Ellen Grange: I'm not that decent, I guess!
Willard Grange: Oh, don't shout. They'll hear ya.
Ellen Grange: You don't care what happens to me... but only what people think about you.
Willard Grange: I do business with them people.
Ellen Grange: The same people who treat your wife like dirt. I was better off with the Indians!

- Bibi Andersson in Duel at Diablo (1966)

Lt. Scotty McAllister: You were a pretty good sergeant once, Toller, but now you're just another money grubbing civilian.
Toller: You used to be a pretty good sergeant yourself, McAllister, but now you're just a... rank officer.

- Sidney Poitier in Duel at Diablo (1966)

[to his wife]
Willard Grange: My horse is dead and you're back - shoulda been the other way around.

- Dennis Weaver in Duel at Diablo (1966)