the end justifies the means

Results excuse methods

The end justifies the means is the principle that achieving a good outcome excuses morally questionable methods used to get there.

The phrase typically carries critical or skeptical weight—accusing someone of this reasoning rather than defending it: He lied to protect her, but does the end justify the means?

The idea traces to Machiavelli, though the exact wording doesn't appear in his work.

Related

ethics · teleology · Machiavellianism · utility · integrity · self-deception · greater good · lesser evil · moral compromise · virtue · values · consequences · by any means · ends and means · cost-benefit analysis · principles · cognitive dissonance · compromise

Opposites
ethical framework

the end justifies the meanscategorical imperative

Unconditional ethical obligation

practical philosophy

the end justifies the meansplay by the rules

Follow accepted procedures

fair play · ethical conduct · by the book · above board · do no harm

Family

ending, endless, endlessly, justify, justifies, justified, justifying, justification, justice

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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G