Companionship and isolation influences one's perspective, and this is evident in Of Mice and Men by John Steinbeck. One example of this is when George rants about dealing with Lennie.
"'God a'mighty, if I was alone I could live so easy. I could go get a job an' work an' no trouble....
An' whatta I got. I got you! You can't keep a job and you lose me ever' job I get.'" (11)
When George tells Slim about how Lennie is his companion and how Lennie is a good worker, Slim finds it intriguing.
'"Ain't many guys travel around together. I don't know why. Maybe ever'body in the whole damn world is scared of each other.'" (35)
This is also evident when Carlson is convincing Candy to have his old dog killed.
"'He don't have no fun. Tell you what. I'll shoot him for you. Then it won't be you that does it.'" (45)
George decides that isolation is better than companionship in the heat of the moment. Since he is partners with Lennie, he feels responsible for Lennie, but is frustrated with the consequences of Lennie's mental challenges. Since George has always had to deal with Lennie and the troubles raised by his behavior, he assumes that being away from Lennie would be best for him.
Another point where companionship influences behavior is when Candy wants to join in on George and Lennie's dream.
"'I gotta think about that. We was always gonna do it by ourselves.'"
Partners share strengths and responsibilities, but also their weaknesses. Slim recognizes this and understands in this period of time, it was hard to find partners because everybody was alone and fending for themselves.
Additionally, when Crooks teases Lennie that George would leave him, Lennie becomes angry.
"'What you supposin' for? Ain't nobody goin' to suppose no hurt to George.'"
Carlon doesn't understand the personal connection Candy has with his dog. Candy is hesitant to have his dog killed because they have been friends for a long time and he doesn't know if he can handle the loneliness after having a partner for such a long time. Since Carlson doesn't experience their bond, he insensitively suggests killing the dog just because the dog smells bad.
Even Curley's wife expresses her loneliness through her behavior.
After his dog was killed, Candy doesn't have any close relationships so he doesn't have anything to lose. Since he doesn't have anyone to support, he gives his entire fortune to George and Lennie in hopes of finding people that would include him like a family. On the flip side, George and Lennie have each other through all of their hardships and work together to achieve their dream. Since they've shared such a strong personal connection, they feel hesitant to share their dream.
"'I'd make a will an' leave my share to you guys in case I kick off, 'cause I ain't got no relatives nor nothing.'" (59)
Lennie has become so dependent on George that he feels threatened when it's even suggested that George would leave him some way. Lennie doesn't have anyone else to support him, so he assumes that the loneliness would crush him.
"'Jus' set down. George ain't hurt.'" (72)
Even though Curley's wife has a husband, she is neglected and kept isolated from everyone. Since she is so desperate for company, she tries to get the attention of other men. This shows that loneliness can cause people to act out irrationally in order to gain companionship.
"'Think I don't like to talk to somebody ever' once in a while? Think I like to stick in that house alla time?'" (77)