Paul Bäumer: You still think it's beautiful to die for your country. The first bombardment taught us better. When it comes to dying for country, it's better not to die at all.

Katczinsky: I'll tell you how it should all be done. Whenever there's a big war comin' on, you should rope off a big field...
Cigar-smoking soldier: And sell tickets.
Katczinsky: Yeah. And --- And on the big day, you should take all the kings and their cabinets and their generals, put 'em in the center dressed in their underpants, and let 'em fight it out with clubs. The best country wins.
[everybody murmurs in agreement]
Paul Bäumer: Well, now that Kat's settled everything, let's go see Kemmerick.

Second orderly: Your deal. Get his name and number?
Medic Orderly: Yeah. Corporal Stanislaus Katczinsky, 306.

Paul Bäumer: Up at the front you're alive or you're dead and that's all. You can't fool anybody about that very long. And up there we know we're lost and done for whether we're dead or alive. Three years we've had of it, four years! And every day a year, and every night a century! And our bodies are earth, and our thoughts are clay, and we sleep and eat with death! And we're done for because you can't live that way and keep anything inside you!

Mueller: Listen, the sum of an arithmetic series is S = A + L times N over 2. Interesting, isn't it?
Katczinsky: What do you want to learn that stuff for...? One day you'll stop a bullet and it'll all be worthless.