Related:

• He who knows does not speak, He who speaks does not know. -- Lao Tzu
• I don't know what your destiny will be, but one thing I do know
  the only ones among you who will be really happy are those who have sought and found how to serve....
• To those who know thee not, no words can paint! And those who know thee, know all words are faint!
  -- Hannah More (1745-1833) -- Sensibility...
• Good morning. For those of you who don't know me, I am not Dr.
  X; I am Dr. X's representative on Earth....
• Those who know, do not say; those who say, do not know.
• Those who talk don't know. Those who don't talk, know.
• Of those who say nothing, few are silent. -- Thomas Neill
• Those who know the least know it the loudest.