After Simon tells his roshi the story of the man who waited at the door of the Law, the student begs his master to explain the dark parable. The teacher replies that he will explain it, if Simon follows him into the zendo.
The fourth part of « The Door Of The Law » is entitled « Pedagogue » and tells the story of the roshi's response to his student's plea.
Now I see
Dear Simon why you looked so weary
I will explain the allegory
And from its bind you will be free
Come with me
I know just the thing needed for thee
The meditation hall holds the key
But the answer is one you must see