“Those who don't know speak...Those who really know, don't speak!!!!”
“Those who know do not speak. Those who speak do not know.”
“Those who speak know nothing. Those who know are silent.”
“there are three kinds of people in the world: those who don't know and don't know they don't know; those who don't know and do know they don't know; and those who know and know how much they still don't know.”
“...Those who know don't talk and those who talk don't know.”
“Those who worship don't know, and those who know don't worship.”