The Sound and the Fury- Second Generation

It is interesting to me to see how different characters and personalities react to the same events. For instance, what made Caddy such a loving protector for Benjy? Was she predisposed to act kindly toward him? Her character is extremely gentle, and she focuses all her love on Benjy--perhaps to make up for what both of them lack in the parental department. On the other hand, Jason takes his parents' attitudes to the opposite extreme. All their prejudice, stingy and mean behavior, and intolerance for less capable people show up in the way Jason treats not only neighbors, but his own family. He openly scorns and publicly castigates Miss Quentin, whereas Quentin privately argues with Caddy about her behavior. Both boys are obsessed with appearances like their mother, but Quentin objects quietly, and when that doesn't work, he ends his problem quietly. Jason acts out spitefully and loudly, threatening everyone he comes across- from the lazy, no good household help to his only niece. The only slight concession he makes is toward his mother, who depends on him and has always preferred him to his siblings. But he considers her stupid and annoying as well. At this point, as far as I can see, Jason has been affected the least by sins of the older generation. Caddy is forced to watch after her retarded brother and deliver illicit love letters from her uncle--this act, if nothing else may have pushed her to promiscuity. Benjy, of course, is an observer by nature- he does not react as obviously as his siblings, although he does sense events and actions. . . . Quentin, always pushed to succeed, is the reason Benjy's field must be sold--guilt over this contributes to his early death. But Jason? Who ever did anything to Jason? Does Faulkner reveal something later, or was Jason born mean and hateful?