KNOWING.....OR NOT!

1. He who knows not and knows he knows not—he is a child. Teach him.
2.  He who knows and knows not that he knows—he is asleep. Wake him up.
3.  He who knows not and knows not that he knows not—he is a fool. Shun him. 
4. He who knows and knows he knows—he is wise. Follow him.

■—Omar Khayyam