Lo, when two dogs are fighting in the streets,

With a third dog one of the two dogs meets;

With angry teeth he bites him to the bone,

And this dog smarts for what that dog has done.

Henry Fielding (1707-1754): Tom Thumb the Great. Act i. Sc. 6.

Behold on wrong

Swift vengeance waits; and art subdues the strong!

Alexander Pope (1688-1744): The Odyssey of Homer. Book viii. Line 367.