Julian Dyer's report on the philosophy of supposedly learned people
[000303 MMD] brings to mind this old (Arabic?) proverb:

  He who knows not and knows that he knows not
  -- he is unlearned: teach him

  He who knows not and knows not that he knows not
  -- he is a fool: shun him

  He who knows, and knows not that he knows
  -- he is asleep: awaken him

  He who knows and knows that he knows
  -- he is wise: follow him

Roger Waring