Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 10:13:

• Kupsabiny: “He begins with words of foolishness and ends with those of madness.” (Source: Kupsabiny Back Translation)
• Newari: “At first he speaks words that are foolish.
  then in the end his words are evil like those of a madman.” (Source: Newari Back Translation)
• Hiligaynon: “At the very beginning what he speaks are foolishness already, and some time later (it is) now very evil, as-if he is not his own self.” (Source: Hiligaynon Back Translation)
• English: “When foolish people start to talk, they say things that are foolish,
  and they end by saying things that are both wicked and foolish.” (Source: Translation for Translators)