Theme: Guilt Dimmesdale feels guilty for not telling his congregation about his relationship with Hester. In the test it says, "Mr. Dimmesdale had gone into the pulpit, with a purpose never to come down its steps until he had spoken words like the above... when sent forth would come burdened with the black secret of his soul. The theme from the book is that guilt comes from not telling what you have done wrong just as much as it comes from the act that was wrong.
Theme: Revenge Roger Chilingsworth is trying to get his revenge on Hester by hurting Dimmesdale instead of helping him like he claims he is. In the book it says, "Or would he spread bats wings and flee away, looking so much the uglier the higher he rose towards heaven." The closer Chilingsworth gets to his goal and the older he gets, the worse his character becomes. By pursing his revenge, he had become a worse person. This is the theme the book is trying to get across.
Theme: Isolation Hester feels isolated from society. In the book it says, " Standing alone in the world, alone, as to any dependence on society, and with little Pearl to be guided and protected, alone, and hopeless of retrieving her position." Although Hester is accepted by society at this point and even praised, she feels like non of them understand her and feels that she is isolated from them. The theme is that to feel included, a person must feel understood.