1. Douglass initially has a positive opinion of Sophia Auld. He learns that Mrs. Auld is quite kind and she sees slaves as people. She is interested in their welfare and education. Therefore, Douglass likes spending time with her and feels safe. However, this quickly changes. Mr. Auld convinces Mrs. Auld that she is affecting slaves, and that the right way to treat them is a cruel one. This makes Sophia act cruel as well, which in turn makes Douglass more careful when he is around her.
2. The slaveholder argues that if slaves learn how to read, they become more difficult to control. This is because they learn about the world, and about what they are missing, and this makes their lives intolerable. This is in fact what happens with Douglass. After he learns how to read and write, he thinks about his condition differently, and this causes him enormous pain.
3. Douglass tells us the story of his grandmother, who was left to die alone when she was old. He tells us how his grandmother had many children, grandchildren and great-grandchildren that the slaveowners kept or sold. Douglass uses Whittier's poem to express the pain that his grandmother must have felt when thinking about all her lost relatives.
4. The rule that Thomas Auld violates is that of feeding slaves enough food. This is considered common decency. He does not do so, and in fact, his slaves are always hungry. Douglass suffers from this as well, which causes him to always be looking for an extra piece of bread.