German philosopher Immanuel Kant ( 1724 – 1804) was the all-time champ at rules-based ethics, concocting several useful formulations of what he called “the categorical imperative,”or the principle of absolute morality. All of them are, as absolutes, the starting points for hopelessly convoluted debates and “what ifs?,” but philosophy geeks love that stuff. For me, the main value of Kant’s absolutism as that they are useful for pinging ethics alarms.
Kant’s “Formula of Humanity” stated (in German, of course): “So act that you treat humanity, whether in your own person or in the person of any other, always at the same time as an end, never merely as a means,” or in the short version, “Never treat another human being as merely as means to an end.”
Abortion, for example, is an ethical controversy that Kant clarifies quickly: abortion rationalizers have long tried to duck the “Formula of Humanity” by denying that a fetus with human DNA created by humans that will grow to be a born and eventually a walking, talking, member of human society isn’t a human being at all, and thus killing it for the benefit of its mother isn’t using whatever it is as a means to an end.
You can get in the high weeds of Kant’s most famous rule here. For instance, Kant holds that it may be wrong for a person to treat himself or herself merely as a means: now there’s a metaphorical rabbit hole. But for the purposes of this post, let’s just look at two recent examples of people who probably can’t spell Kant, never mind recognize when they are defying him.