In the first two chapters of Steinbeck's Of Mice and Men, George Milton and Lennie Small are presented as what would appear to be an unlikely pair of best friends. George is a small, street-smart dreamer, whereas Lennie is a huge man who possesses incredible physical strength, but has the intelligence of a young child. Despite their differences, the two men travel around California together doing various jobs.
Lennie's lack of intelligence causes George lots of trouble and the smaller man laments that he "could get along so easy and so nice if I didn’t have you on my tail." Still, the two men have learned to compliment each other and work together as a team: George serves as the brains, while Lennie serves as the brawn. Even Lennie is smart enough to remember that "I got you to look after me, and you got me to look after you."
Finally, in the first two chapters of the novel, we learn that the two men share a dream, a dream of having a little house together where they can grow their own food and Lennie can take care of the rabbits.