For example, almost everyone recognizes (with some exceptions) the elementary moral principle that you should not do something for your own benefit if it harms another person.
Perhaps, just perhaps, undermining any interest, even if you undermine interests of others, to an advantage to yourself, turns out to be a disadvantage in the run, long or short.
The head of London's Metropolitan Police has called for all Specials -- volunteer police officers -- to report for duty, as the capital's law enforcement resources are stretched thin.
He leant his forehead on his hand, and people, looking in through the open door, — for this scene is supposed to take place on a summer's evening — But how dull this is, this historical fiction!