Answers 1Add Yours
Crooks is aware that as an African American he is isolated from the rest of the men. He can share the bunkhouse, isn't invited to socialize or participate in activites with the men, and is ostracized from the others on the ranch. Each of these things contributes to Crook's pessimism and desire to stay isolated. He keeps to himself because he doesn't feel welcome, and he reacts poorly to good intentions because he isn't used to them.
Of Mice and Men