Halloween Poem Inserted Into Hamlet Act 5, Scene 1

(I found this Calderon scene slightly more fun than Hamlet and Horatio unearthing Yorick's skull in the graveyard. Have always wished the old jester had a line in Shakespeare's play, but ventriloquism with a skull would be a bit morbid) 

This shell of holes and hinges
Doth in disinterment turn
Bold and impart timeless
Secrets to thee --lives in discussion,
Not aristocracy, want thought
And not decree-- in guilds and
Trades, list, oh list: the human
Mind seeks rationality, the sublime,
To combine and and set it free.