Following are a number of back-translations as well as a sample translation for translators of Proverbs 17:16:

• Kupsabiny: “There is no goodness/value if/when money is wasted on a fool,
  because he is not happy to be taught.” (Source: Kupsabiny Back Translation)
• Newari: “It is useless for fools to spend money
  to get an education [Lit: to learn the alphabet],
  since they have no desire (Lit.: no heart) for learning.” (Source: Newari Back Translation)
• Hiligaynon: “There is no value to spend-money to have/cause-go-to-school of a foolish man for he has no desire/[lit. appetite] to study.” (Source: Hiligaynon Back Translation)
• Kankanaey: “It is useless that a mindless-one spend-money to learn, because he dislikes to-be-taught.” (Source: Kankanaey Back Translation)
• English: “It is useless to allow foolish people to try to become wise by paying for it,
  because they do not have enough good sense to become wise.” (Source: Translation for Translators)