George:"No look! I was jus' foolin', lennie. 'Cause I want you to stay with me." This quote shows that geaorge fears to be alone.
Lennie:"If you don't want me I can go off in a hill an' find a cave." This shows that this the last thing lennie wants to do.
Candy:"When they can me here I wisht somebody'd shoot me. But they won't do nothing like that. I won't have no place to go, an' I can't get no more jobs." This shows that candy feels useless without his dog and alone.
Crooks:" A guy needs somebody to be near him. A guy goes nuts if he ain't got nobody. Don't make no difference who the guy is, long as he's with you." This shows that crooks needs somebody to talk to.
Curley's wife:"Why can't I talk to you? I never get to talk to nobody. I get awfully lonley." This shows that candy is lonley so she goes to other men and talk to them