"...if you don't reveal to me who did this, / you'll just confirm how much your treasonous gains have made you suffer" (lines 380-382).
"...you won't see me here again. / This time, against all hope and expectation, / I'm still unhurt. / I owe the gods great thanks" (lines 329-331).
"There are many strange and wonderful things, / but nothing more strangely wonderful than man" (lines 388-389).
This part in the conversation between Creon and the messenger is a key element to the plot because it foreshadows how Creon is planning to make somebody suffer for the crimes of the one that disobeyed his set laws, whether it be the messenger, or Antigone, or both.
At the end of this scene, the messenger states that he hopes that the criminal is found but will not be coming back to see Creon ever again. He also thanks the gods for protecting him from harm from Creon. This shows that Creon is so harsh and demanding that even a messenger and guard, was frightened enough by him to be hesitant to talk to him and especially to deliver bad news to him.
The Chorus talks about men and how men teach themselves to read, plow the land, and speak and how these skills can sometimes lead to evil. Creon's characteristics and strong will led him to a disastrous life including many tragic events. With all of these helpful skills, there is nothing he cannot confront, other than death itself.