Crowley shakes his head to such a concern. "No, no, see-- you've got it all wrong. Doesn't matter if it's right or wrong... all those things are subjective." 

This is a lesson of course that Crowley's learned just before landing on this island. Heaven is a lot like hell, in the end. There really is a joke somewhere about the difference between good and evil, but he can't be assed to make it. He clears his throat. "Do what you feel is right.  What you care to do."