What is the theme in The Destructors by Graham Greene?

There are many good themes to be had from this story. The destruction creation dichotomy is one major theme. Everything needs to live and die. Old misery's house was a relic left out of a WW2 bombing that flattened the area around it. T wanted to destroy it as a work of art. Destruction hence becomes a form of creation. From the rubble of Old Misery's house will come something new.