Javier Bardem

The complexity of Chigurh was a kind of dream — the Coen brothers are my favorite directors of all time. On that movie, I was the only foreigner. And Chigurh really comes out of nowhere, which helped with the character, but it was a little isolating. 
NY Times
With Chigurh, I saw him as a man with a mission that was beyond his control. Someone chose his fate for him. I thought of him as a man who never had sex. He doesn’t like human fluids, even his own. [Pauses] I don’t want to get into too many details, but I even imagined how Chigurh would masturbate. For the Woody Allen movie, I don’t have to imagine such things because the character is very sexual, but for Chigurh, it was important to think about how he relates to other people, even sexually. So, I think he will masturbate once per month in the dark and with a pillow. Very clean.
NY Times
I don’t see Chigurh as evil. You don’t have to like the characters you play, but you have to understand them and you must always defend them. Every actor wants to get to a point where you allow yourself to be taken by somebody else. That is the pleasure of it.
NY Times

Ethan Coen

The book specifies that he drives a Ramcharger, and we even found the little ornament, which even looks a bit like Chigurh’s haircut, with its little curl. But generally, it’s more perverse and unusual not to follow certain conventions in a movie, than it is to do that in a novel. The thing about not always showing Chigurh kind of comes from the book, and the idea of him being ghostlike – is he human or isn’t he? – which Cormac plays with; that’s more fun to play with in a movie. I remember us saying when we were doing the script, “It’ll be successful if we can make it really scary, like a horror movie.” It had to create a real sense of dread.
Time Out
That came from the wardrobe department. They found a photo of a guy in west Texas in 1979 who was just odd-looking, with that haircut. We wanted Chigurh to be believable for that place and period, but not like everybody else. That’s one reason we chose Javier Bardem. In the novel, it’s strange the degree to which Chigurh is withheld; he’s not described physically. Someone suggests he’s not of the region, which we took as licence to make him not even of the United States. So he’s kind of alien, an outsider.
Time Out
There’s something great about Chigurh peeling his bloodied socks off…
Time Out

Joel Coen

It’s in the book, but we play it up. One of the many interesting things Cormac does, which we also do, is this weird doubling of Moss and Chigurh: taking off their boots, walking around in their socks, buying shirts…
Time Out

Cormac McCarthy 

I was at the Academy Awards with the Coens. They had a table full of awards before the evening was over, sitting there like beer cans. One of the first awards that they got was for Best Screenplay, and Ethan came back and he said to me, "Well, I didn't do anything, but I'm keeping it." 
Wall Street Journal