Do you really think that everyone should simply bend to the externalities that you generate?
You really think that you could drop toxic waste on a river that goes through your property and no one can complain when the river dies because you are more important that the victims of your externalities?
Because it is a terrible argument that does not seem to have any basis on how the real world operates.
An externality is something like "cigarettes produce smoke that contains a lot of carcinogens, and therefore cigarette smoking can contribute to the poor health of people who are nearby even if they do not choose to smoke themselves."