"Four types of Men"

Fools and Foolishness

There are four types of men in this world:

1. The man who knows,
and knows that he knows;
he is wise, so consult him.

2. The man who knows,
but doesn't know that he knows;
help him not forget what he knows.

3. The man who knows not,
and knows that he knows not;
teach him.

4. Finally, there is the man who knows not
but pretends that he knows;
he is a fool, so avoid him.