He that learns naught will never know how one is the fool of another, for if one be rich another is poor and for that should bear no blame. (Norse Proverb)
If haply a fool should find for himself wealth or a woman's love, pride waxes in him but wisdom never and onward he fares in his folly. (Norse Proverb)
Never in speech with a foolish knave shouldst thou waste a single word. (Norse Proverb)