From the greatest spaghetti western ever made-My Name Is Nobody:
Jack Beauregard(Henry Fonda):" Folks that throw dirt on you aren’t always trying to hurt you, and folks that pull you out of a jam aren’t always trying to help you. But the main point is when you’re up to your nose in shit, keep your mouth shut."
IMDB to the resuce
Ha! I wasn’t too far off with my remembered (now redacted) version. I guess that happens after about the 15th viewing.
Another classic from The Magnificent Seven:
Calvera: What I don’t understand is why a man like you took the job in the first place, hmm? Why, huh?
Chris: I wonder myself.
Calvera: No, come on, come on, tell me why.
Vin: It’s like a fellow I once knew in El Paso. One day, he just took all his clothes off and jumped in a mess of cactus. I asked him that same question, “Why?”
Calvera: And?
Vin: He said, “It seemed to be a good idea at the time.”
I lived in El Paso for 20 years. I understand completely.
Definitly a lesser work, but I’ve always liked this line from the made-for-TV movie El Diablo:
Billy Ray: You just shot that man in the back!
Van Leek: Well, his back was to me.
Yeah, Josey has some great lines. Dyin’ ain’t much of a living, boy is one of my favorites.
City Slickers:
MITCH ROBBINS (BILLY CRYSTAL) [on learning that the herd they paid to drive is actually going to be slaughtered]: These cows . . . They trusted us!
PHIL BERQUIST (DANIEL STERN): They didn’t trust us! They moved because we rode behind them and cracked our whips and shouted “Yah!”
A couple of my favorites from Butch Cassidy and the Sun Dance Kid:
Butch: “You call that cover?”
Sundance: “You call that running?”
Sundance: “I can’t swim.”
Butch: “Well, hell, the fall will probably kill you.”
And my favorite from The Magnificient Seven:
The young fellow with James Coburn (Horst Bucholtz?)hadn’t done his job and one of the bad guys had gotten away and at impossible range Coburn’s character shoots the villain off his horse with his colt. The young fellow goes on and on about how great the shot was.
Coburn (shaking his head after a long pause): “I was aiming at the horse.”
Two from Support Your Local Sheriff:
“I’m just passin’ through on my way to Australia.”
“The bullet went through the hole.”
It certainly *feels *like a western (and has some great lines) (we’re talking about No Country For Old Men, by the way)
Wendell: It’s a mess, ain’t it, sherriff?
Ed Tom: If it ain’t, it’ll do until the mess gets here.
From perhaps the best Western ever made, Shane:
Shane: Not quite yet, we haven’t heard from your friend here (refering to hired killer Jake Palance as Wilson):
Wilson: I wouldn’t push too far if I were you.
Wilson: My fight ain’t with you.
Shane: Ain’t with me Wilson?
Wilson: No it ain’t Shane.
Ryker: I wouldn’t pull on Wilson, Shane.
Shane: So you’re Jack Wilson
Wilson: What’s that mean to you Shane?.
Shane: I’ve heard about you.
Wilson: What have you heard Shane?
Shane: I’ve heard that you are a low down Yankee liar.
Wilson: Prove it.
Shane then butchers the lot of them. The tension is incredible. Just an amazing scene in one of the finest movies of all time.
And from a very underrated Western, Lonesome Dove:
NYT Report to Tommy Lee Jone’s character Captain Coll:
But they say you’re a man of vision!
Captain Coll: Looks away and thinks about all that has happened:
Vision? That’s one hell of a vision.
Cause he had killed Frank “Stonewall” Torrey, the Southern guy played by Elisha Cook. Cook was not only in *The Maltese Falcon, The Big Sleep * and Shane, but played Kirk’s attorney in an episode of Star Trek. 
Ah yes, good one! Billy Crystal, shaking a cow’s birth fluid off his arm:
“This was NOT in the brochure!”
From Cat Ballou:
Jackson Two-Bears: He’s a murderer, a hired killer. His nose was bit off in a fight.
Frankie Ballou: If I was gonna be scared, I’d be scared of the fella who bit it off, not him!
Jackson Two-Bears: Kid, Kid, what a time to fall off the wagon. Look at your eyes.
Kid Sheleen: What’s wrong with my eyes?
Jackson Two-Bears: Well they’re red, bloodshot.
Kid Sheleen: You ought to see 'em from my side.
Clay Boone: We can’t hold up the train.
Cat: Why not?
Clay Boone: Lots of reasons.
Cat: Name 'em.
Clay Boone: We’re rustlers, not train robbers.
Cat: Well, if people didn’t try something new, there wouldn’t be hardly any progress at all.
I’ve been tempted to post that, being from Texas and all. It’s a western for me and more importantly a great line.
That’s very linear, Sheriff.
Another from Unforgiven, Will Munny speaking to the writer:
“I was lucky in the order… but I’ve always been lucky when it comes to killin’ folks.”
Not great but greatly amusing (at least I found it so).
Hopalong Cassidy: [reacting to a knife that has been thrown at him by Slim] Where I come from, we don’t like people that throw knives at men’s backs.
Law of the Pampas (1939)
As if there were places where they did like people that threw knives at men’s backs! 
Rather than starting a new thread on YouTube clips from great Westerns, and since I didn’t participate earlier in this thread, I’m hoping that nudging this zombie won’t annoy more folks than the ones who might like to add some clips of their own.
Shane 1953 Jack Palance - And where do you think you're going? Low Down Yankee Lier
Best Ending To a Movie. 3:10 To Yuma
Top 10 Western Movie Gunfights Top 10 Western MoviesLong as it’s bumped…
The whole “Endeavor to persevere” speech, delivered so wonderfully deadpan by Chief Dan George, from Outlaw Josey Wales. Among Westerns fans, sometimes all ya gotta say is “Endeavor to persevere.”
What’s the movie where John Wayne (?) rebukes someone who is drinking sloppily: “Careful, some of that’s getting in your mouth.”