Revenge is a dish best served cold. (And with a side of fries. But isn't everything best served with a side of fries?) Roger Chillingworth seems to agree, as you can no doubt tell by the extremely frosty fake name that he chooses. He spends seven years psychologically torturing Hester's lover Dimmesdale, keeping him alive just so he can squeeze out just… a… little…. more vengeance. Unfortunately, revenge in The Scarlet Letter is also served with an unexpected side: the loss of humanity. It turns out that God is the only one who gets to do the revenging around these parts, and he's got a little surprise for our anti-hero.
The Scarlet Letter suggests that revenge is a dish best served by God.
Chillingworth redeems himself with his final act, giving Pearl and Hester the money they need to escape their community.