Crooks is a very cynical man because of the way that he has been treated during his life. Because he is a Black man, he is forced to live in a separate room on the ranch away from the other men. He reads books to pass the time but has no real relationships with the other men who work on the ranch. His cynicism has made both his belief in God and in dreams disappear. So when Lennie first tells him about the dream he and George have of a farm, Crooks simply doesn't believe it can happen. That's why he says," Nobody never gets to heaven and nobody gets no land." In other words, heaven doesn't exist for Crooks and neither do the fulfillment of dreams. He is sure Lennie and George will never achieve their dream of a farm or land.
After Lennie describes the dream farm that he and George continually discuss, Crooks says, "Nobody never gets to heaven, and nobody gets no land. It's just in their head."
As was mentioned in the previous post, Crooks is a cynical man who has been subjected to discrimination because of his race. Unlike the white workers on the ranch, Crooks cannot sleep in the bunkhouse and lives a relatively isolated, lonely life. Crooks loses his faith and no longer believes in God because of his difficult life.
Crooks's comment not only reflects his cynical nature and lack of faith, but also illustrates the plight of migrant workers during the Depression. Crooks mentions that he has witnessed hundreds of workers arrive at the ranch with their own dreams of someday owning land. However, Crooks has never seen or heard of any workers actually fulfilling their dreams, in the same way that he has never seen anyone reach heaven. In Crooks's opinion, both heaven and dreams of owning land are simply positive illusions that motivate people to stay alive.
People always come in hoping for things and wanting things. They work for things which he think are impossible. He has seen many people come and go in his life and he only has seen them fail at the one thing every man wants most: their own land. at least that is my own opinion...