What does “Anger is relative” mean?

Question

Here is the context from the book I am reading:

Character A: Watch your temper.

Character B: Anger is relative. Others are mad enough to kill, but not I.

What is meant by “Anger is relative?” It sounds incomplete. I know “relative” means “in comparison to,” but obviously the character doesn’t say what exactly anger is relative to.

In: 1

Answer 1

Each person’s anger is relative to another person’s. It says that in the second sentence. His anger is lesser, relative to the anger of a person who would kill.