The ends justify the means.

Meaning

A morally questionable action can be justified if the outcome is good.

Examples

• John: 'Is it ethical to lie to protect someone?'
• Alice: 'Some argue that <b>the ends justify the means</b> in such situations.'
• John: 'They believe <b>the ends justify the means</b>, even if it's controversial.'
• Alice: 'They used deceptive tactics to win the election.'