Only a virtuous people are capable of freedom. As nations become corrupt and vicious, they have more need of masters.
Franklin argues that political freedom depends not only on institutions but also on the conduct of the people who live under them. A society capable of self-restraint, responsibility and respect for others may require less coercive supervision. By contrast, widespread corruption or disregard for public obligations can make stable self-government more difficult.
The reference to “masters” suggests increasingly restrictive authority rather than a literal endorsement of domination. Franklin’s broader claim is that liberty and civic virtue are connected: when people cannot govern their own behaviour, governments may respond with stronger rules and controls. The statement should not be taken to mean that authoritarian rule is justified whenever a society has moral failings. It is instead a warning that political freedom can become harder to sustain when trust, responsibility and public-minded conduct deteriorate.