In Sophocles' play, Antigone, most characters act following their emotions, which leads them to negative effects.
Antigone, acting on her love for her deceased brother, Polynices, decides to bury his body, against the king's orders, which is the cause of all the tragedies. When confronted by the King, Antigone is given the opportunity to repent and stay alive but she follows her pride and decides to die.
Haemon, Antigona's fiancé, also acted on his love for her, and took his own life after she was immured for her crime.
On the other hand, the character of the King, Creon, is presented as a wise, prudent character. He takes hard decitions, based on their advantages and profits to his kingdom. He declares that only Eteocles will be buried while his brother would be left to rot. While this was a harsh law, it was necessary, since Polynices had betrayed the King.
Also, even after Antigone's crime, he offers her the chance to keep living, because he knew that her marriage with Haemon would be more beneficial to the kingdom than her death.