Most significant quotes about loneliness and isolation in Of Mice and Men?

From the text:

"Guys like us, that work on ranches, are the loneliest guys in the world. They got no fambly. They don't belong no place. They come to a ranch an' work up a stake and then they go into town and blow their stake, and the first thing you know they're poundin' their tail on some other ranch. They ain't got nothing to look ahead to."

"A guy goes nuts if he ain't got nobody. Don't make no difference who the guy is, long's he's with you. I tell ya," he cried, "I tell ya a guy gets too lonely an' he gets sick."

She knelt in the hay beside him. "Listen," she said. "All the guys got a horseshoe tenement goin' on. It's on'y about four o'clock. None of them guys is goin' to leave that tenement. Why can't I talk to you? I never get to talk to nobody. I get awful lonely."