Description requires attention: dialogue rivets attention.
It is not an easy task, nor is it pleasant, to carry on another man's work: but the possession of this scenario lightened the work enormously.

I have been careful to adhere faithfully and exactly to the plot, scene by scene, down to the smallest detail as it was laid down by the author in this book.

I have altered nothing.

I have preserved and incorporated every fragment of dialogue.

I have used the very language wherever that was written so carefully as to show that it was meant to be used.