Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 9:18:

• Kupsabiny: “Wisdom beats/is better than weapons of war, but one sinner can overthrow every good thing.” (Source: Kupsabiny Back Translation)
• Newari: “Wisdom is better than weapons of war,
  but one sinner will destroy much good work.” (Source: Newari Back Translation)
• Hiligaynon: “Wisdom is better than weapons in war. But one sinner can-destroy much goodness/good.” (Source: Hiligaynon Back Translation)
• English: “Being wise is more useful
  than a lot of weapons;
  but if you do one foolish thing,
  it is possible that because of doing that, you will ruin all the good things that you have done.” (Source: Translation for Translators)