Person

There are four kinds of persons:
1) One who doesn't know: One who doesn't know that he doesn't know; he is a fool; Stay away from him.
2) One who doesn't know: But he knows that he doesn't know; he is a sincere person; Teach him.
3) One who knows: But he doesn't know that he knows; he is the one who is like sleeping; Wake him up.
4) One who knows: One who knows that he knows; he is wise and intelligent; Approach him.