The end justifies the means
The idea is ancient, but it was not meant to justify unnecessary cruelty. It was part of a political philosophy called consequentialism. The basic idea is that a policy can be judged by its outcome. All modern versions of consequentialism have to deal with the limitations necessary to prevent tyrants abusing this idea.
- "Machiavelli Said, "the Ends Justify the Means" - Fact or Myth?". Fact / Myth. Retrieved 2022-09-21.