Both George and Lennie are migratory workers seeking employment in the Great Depression, and like so many they have no home, together they encourage one another with their dream of owning a homestead. Friends, Lenny in his childlike idealism asks George to repeat their future plans; George begins to believe that their dream can be fulfilled because of Lennie's idealistic faith. They cling to each other against the terrible isolation of their situation:
Well, we're gonna get the jack together and we're gonna have a little house and couple of acres an' a cow and some pigs and--
An live off the fatta the lan'...And have rabbits (Chap.1)
They are very loyal to each other, as well. George tells another,
I I was alone I could live so easy. I could get a job an' work, an' no trouble...and when the end of the come I could take my 50 bucks and go into town and get whatever I want
But without Lennie, George would be alone and unhappy, he realizes: "Course Lennie's a nuisance most of the time, but you get used to going around with a guy and you can't get rid of him" (Chapter 3).
Lennie and George love one another; they know that their lives have meaning because they are friends. When Lennie accidentally breaks the neck of Curley' wife, George kills Lennie in an act of mercy and love, knowing that Lennie could not survive in prison.