Martha found this proverb that is kind of a tongue twister, but says a lot. I often complain about loud mouthed people who seem to have confidence that they know everything, but really don't have a clue. . . they go on and on, not knowing that they don't know.
HE WHO KNOWS NOT, AND KNOWS NOT THAT HE KNOWS NOT, IS A FOOL; SHUN HIM.
HE WHO KNOWS NOT, AND KNOWS THAT HE KNOWS NOT, IS A CHILD; TEACH HIM.
HE WHO KNOWS, AND KNOWS NOT THAT HE KNOWS, IS ASLEEP; WAKE HIM.
HE WHO KNOWS, AND KNOWS THAT HE KNOWS, IS WISE; FOLLOW HIM.
Persian Proverb
HE WHO KNOWS NOT, AND KNOWS NOT THAT HE KNOWS NOT, IS A FOOL; SHUN HIM.
HE WHO KNOWS NOT, AND KNOWS THAT HE KNOWS NOT, IS A CHILD; TEACH HIM.
HE WHO KNOWS, AND KNOWS NOT THAT HE KNOWS, IS ASLEEP; WAKE HIM.
HE WHO KNOWS, AND KNOWS THAT HE KNOWS, IS WISE; FOLLOW HIM.
Persian Proverb