Cara Dia Mendewasakanmu

There are four types of man:
The man who doesn't know, and doesn't
know that he doesn't know. He is a fool.
Avoid him.
The man who doesn't know, and knows
that he doesn't know. He is a student.
Teach him.
The man who knows, and doesn't know
that he knows. He is asleep. Awaken him.
The man who knows, and knows that he
know. He is a teacher. Learn from him.
Knowing how little you know is the
beginning of wisdom.