oh Orks, how I enjoy hearing you talk...
"Travellin' through space is boring. Well, boring unless da hulk yer on is full of dem gene-sneakers, or a base fer da Chaos lads wiv da spikes, or already has Boys on it. Or if humie lootas come callin', that's always good fer a bit a sport. Or unless yer have a mutiny or two to pass da time, or unless strange fings start happenin', which dey usually do when yer out in da warp. One time we had some bloody great ugly fing come straight out of Weird Lugwort's 'ed! It butchered half da lads, that was pretty entertainin'. Come ter fink of it, space is a pretty good larf. And that's before yer find yerself a nice ew world ta crush!" -Bigmaw, Ork Runtherd (Codex Orks, p18)
"Oomans are pink and soft, not tough and green like da Boys. They'z all the same size too, so they'z always arguing about who's in charge, 'cos there's no way of telling 'cept fer badges an' ooniforms and fings. When one of them wants to lord it over the uvvers, 'e says "I'm very speshul so'z you gotta worship me", or "I know summink wot you lot don't know, so yer better lissen good". Da funny fig is, arf of 'em believe it and da over arf don't, so 'e 'as to hit 'em all anyway or run fer it. Wot a lot of mukkin' about if yer asks me. An' while they'z all arguin' wiv each other over who's da boss, da Orks can clobber da lot." -An Ork Boy's view of humanity and its failings (Codex Orks, p40)
Oh and this ones not from orks, but it regards them...
"The Orks are the pinnacle of creation. For them, the great struggle is won. They have evolved a society which knows no stress or angst. Who are we to judge them? We Eldar who have failed, or the Humans, on the road to ruin in their turn? And why? Because we sought answers to questions that an Ork wouldn't even bother to ask! We see a culture that is strong and despise it as crude." -Uthan the Perverse, Eldar Philosopher (Codex Orks, p8)