Lennie Small is a large man with a brain that doesn't work quite right. He is helped through life by his bosom companion, George Milton. Together, the pair of friends is in pursuit of the American Dream: a home and property to call their own. However, obstacles continually arise to thwart their success. Be sure you understand how Lennie, and the system, contribute to the demise of their mutual happiness by taking the eNotes quiz over the character of Lennie Small in John Steinbeck's classic novella, Of Mice and Men.