A horde of rioting football hooligans burst the gates of Wimbledon and flooded onto the courts, mid-match.

The officials instructed the players to play on.

“Yes, the game is more challenging with drunken louts milling about on the courts, vomiting on the grass, snatching rackets to perform scorching air-guitar solos and atomic super-wedgying the players, stretching their tighty tennis whities over their heads. All this is quite challenging.

“But,” the officials reasoned, “many of these people have never experienced the great sport of tennis. If they see the game up close, played by the best players, perhaps they will be won over to tennis. Maybe they will become the most passionate tennis fans.”

So the tennis players did their best to play around the active and occasionally brutal interference of the hooligans, and tried to win the conditions required to play tennis by playing even better tennis, by the rules of tennis.

Ethics are the principles that sustain an ethos.

Loyal members of an ethos appeal to and honor these principles.

Ethics are not binding beyond the ethos, even for the most principled member. In fact, to meet an existential threat to an ethos with ethics is unethical.

We must never confuse the ethical with the moral.

Ethics are binding within their particular ethos. Morality is universally binding.

Mutuality is for the mutual.