Creon's tone in this statement is one of despair and regret. His words convey a sense of anguish and realization of the tragic consequences of his actions.
In this statement, Creon expresses deep sorrow and despair as he witnesses the horrifying consequences of his decisions. The phrase "murdering, the murdered son" reflects his realization that his decree has led to the death of his own family members. This tells the tragic irony of the situation.
The exclamation mark emphasizes the intensity of his emotions, suggesting that he is overwhelmed with grief and regret. And when Creon mentions "all my civic wisdom," he acknowledges that his political wisdom and authority have been futile in preventing this tragedy which adds to his tone of despair and self-blame.