根本不必回头去看咒骂你的人是谁

根本不必回头去看咒骂你的人是谁。如果有一条疯狗咬你一口，难道你也要趴下去反咬他一口吗？

There's no need to quarrel with the person who scold and curse you. Just like you will not bend down and bite the mad dog that bites you.