Related:

• He who knows others is wise. He who knows himself is enlightened. -- Lao Tsu
• He who knows does not speak, He who speaks does not know. -- Lao Tzu
• He who knows that enough is enough will always have enough. -- Lao Tsu
• He who does not bellow the truth when he knows the truth makes himself the accomplice of liars and forgers.
  -- French philosopher Charles Peguy...
• He who knows, does not speak. He who speaks, does not know. -- Lao Tsu
• He who beleives in nobody knows that he himself is not to be trusted.
• He who knows not and knows that he knows not is ignorant.
  Teach him. He who knows not and knows not that he knows not is a fool....