1. Man who don’t know, also don’t know that he don’t know, he is STUPID .
Go away from him.
2. Man who don’t know, and knows he don’t know, he is an HONEST MAN.
Learn him.
3. Man who know, and he don’t know that he knows, he is SLEEPING.
Get him up.
4. Man who know, also he knows that he knows, he is SAGACIOUS.
Follow him.