Related:

• He knows nothing; and he thinks he knows everything.
  That points clearly to a political career. SHAW...
• The person who quite clearly knows nothing but thinks that he knows absolutely everything has a very distinct orientation toward a political career.
• Why should we take advice on sex from the Pope.
  If he knows anything, he shouldn't -- George Bernard Shaw...
• That guy Ibid, he thinks he knows everything!
• An Englishman thinks he is moral only when he is uncomfortable.
  -- George Bernard Shaw (1856-1950), "Man and Superma...
• Pardon him, Theodotus, he is a barbarian, and thinks that the customs of his tribe and island are the laws of nature.
  -- George Bernard Shaw...
• He that knows nothing, doubts nothing.
• Taught him everything I know, and still he knows nothing.
• An expert is one who knows more and more about less and less until he knows absolutely nothing about everything.