In the Cormac McCarthy book/film The Road the protagonist uses the phrase "Carry the fire" as a credo for remaining faithful to a cause, or pressing on in adversity.
Inspired by this quote, I came up with a design based on it, just for fun.
An individual wants to purchase this design for their own use and so I am looking into potential copyright issues.
POV 1: I am not the author of the phrase, so I cannot rightfully sell a design inspired by it.
POV 2: It isn't a trademark. I assume movie/book copyright doesn't extend to cover every last word of dialogue. Surely it's akin to using something like "Shaken, not stirred"? While many people would understand it as a James Bond reference, it could be argued it isn't specific enough to be considered intellectual property; it's not a name, or an image, or a likeness, or a jingle. It's just words.
Good people of the GP Forum, I ask you: Can I legitimately sell a design using the phrase "Carry the Fire"?