To refrain from imitation is the best revenge.

The line expresses a Stoic ethic: the surest way to answer injury or bad example is not retaliation, but refusal to become like the offender. “Revenge” is redefined as moral independence—maintaining one’s own character, judgment, and conduct rather than mirroring another’s vice. In Stoic terms, external harms and insults are not truly damaging unless they corrupt one’s inner virtue; therefore the “best” response is self-governance and integrity. The thought also implies a quiet superiority: by not imitating pettiness, cruelty, or injustice, one deprives the wrongdoer of the power to shape one’s behavior and preserves one’s own dignity.