the end justifies the means
Definition from Wiktionary, the free dictionary
Widely attributed to Machiavelli’s The Prince, which does reflect this philosophy but does not use the phrase in this wording. A possible source is Ovid’s Heroides (ca. 10 BC), which says Exitus acta probat (“The result justifies the deeds”).
- Morally wrong actions are sometimes necessary to achieve morally right outcomes; actions can only be considered morally right or wrong by virtue of the morality of the outcome.
morally wrong actions are sometimes necessary