Then the liars and swearers are fools: for there are liars and swearers enow to beat the honest men and hang up them.
Act IV, Scene 2
Context
Macduff's young son, in conversation with his mother about traitors, reasons that if liars and oath-breakers outnumber honest people, the dishonest will overpower the honest rather than be punished by them.
Analysis
The son's logic is mathematically sound but morally devastating: he assumes justice depends on majority rule, so whichever group has more people wins. His casual phrase "liars and swearers enow" (enough of them) treats dishonesty as a simple demographic fact, revealing a child's clear-eyed recognition that might makes right in Scotland—a truth the adults around him obscure with talk of wisdom and nobility.
Essay Tip
Support a thesis that Shakespeare uses the innocent perspective of Macduff's son to expose uncomfortable truths—the boy's pragmatic reasoning reveals that under Macbeth, there is no moral justice, only the logic of power and numbers.