Dramatic foil of Frair Lawrence and Romeo, and Benvolio and Tybalt/
Romeo complains after receiving the news
Banishment? I'd rather choose death! Exile is much worse, do not speak of banishment.
You are banished from Verona. Be patient, for the world is broad and wide.
Frair Lawrence calmly reassures him
The world outside Verona is hell, being banished from Verona is being banished from the world which is the same as death. Calling death banishment is like smiling while killing me with a golden ax.
Romeo gets angry and vents
Frair Lawrence tries to talk sense into Romeo
O rude unthankful boy, you commit a crime punishable by death, yet the prince ignored the law and banished you. This is mercy and you don't see it.
Romeo refuses and gets angrier
No! It's torture, heaven is here because Juliet is here. Even flies may kiss Juliet, but I can't. Do you have anything you can kill we with? How can you of all people, call banishment mercy?
The cellar scene of Frair Lawrence and Romeo demonstrates dramatic foil. Romeo is acting like an bratty teenager. He is rash and wants to make stupid decisions. Frair Lawrence is wise and calmly reassures Romeo throughout his anger. The two opposite personalities exaggerates the other and makes the other stand out.