Following are a number of back-translations as well as a sample translation for translators of Proverbs 12:1:

• Kupsabiny: “A person who loves wisdom, loves to be counselled/corrected,
  but/and the one who does not love to be counselled, is foolish.” (Source: Kupsabiny Back Translation)
• Newari: “Whoever tries to correct [his] mistakes
  is intelligent.
  Whoever does not try to correct [his] mistakes is a fool.” (Source: Newari Back Translation)
• Hiligaynon: “A man who wants his behavior to be-straightened wants to become-wise, but a man who does not want to be-rebuked is stupid/stubborn.” (Source: Hiligaynon Back Translation)
• Kankanaey: “The one who wants to become-wise/intelligent/skillful, he really-wants to be-advised, but the one who refuses/dislikes to be-taught, he is mindless (lit. has no thoughts/mind).” (Source: Kankanaey Back Translation)
• English: “Those who want to know what is right to do want to be disciplined/corrected when they do what is wrong;
  it is foolish to not want to be corrected/told that what you did is wrong.” (Source: Translation for Translators)