There are different themes running through Of Mice and Men, all linked primarily to George and Lennie as the central characters of the novel. Their plan to own their own farm highlights the theme of dreams, which also involves Candy and Crooks, as well as Curley’s wife. George and Lennie’s unusual friendship introduces the idea of companionship, while also contrasting with the loneliness experienced by characters such as Curley’s wife, Crooks and Candy.