That’s not quite what I meant. I am saying that some philosophies do not admit any gradation or nuance in morality at all. All actions are right or wrong, and none of the wrong ones are “more wrong” than others.
Consider an extreme system such as the Categorical Imperative of Kant. If a member of the Gestapo came to your door and asked if you were harboring any Jews, and you were, what should you do? Most people would say that lying is wrong and that aiding a murderer is wrong, but would concede that lying is the lesser evil. But not Kant! No, Kant’s solution was to simply stay silent. You wouldn’t be lying then. Of course, the Gestapo would arrest you and then search your house and find the Jews, but you would be morally unblemished according to Kant. Again, to emphasize: Staying silent is not a lesser evil in such a case under Kant’s framework. It is completely morally neutral.
Now you can say that Kant was a psychopathic nutjob, but then you have to define what a psychopath is. All you’ve done is replaced the question of defining evil with the question of defining psychopathy.
Are you sure you are understanding Kant correctly? The example you give is often used, but I haven’t encountered it, or anything analogus, in Kant. If quotes of Kant are taken out of context (about the universality of the categorical imperative), they can lead to a kind of distorted view of him.
The categorical imperative means that it is not in a form dependent upon any result (i.e.“Do not lie”, as opposed to “Do not lie if you want X”…), which Kant demonstrates exists for all humans (even for all rational beings). Although it takes various expressions- he says the categorical imperative is one.
Nevertheless, he recognises, that even in transgressing it (which we do), the conflict between two realities is reflected. For Kant, there is the ‘world of reason’, in which we are free, rational beings, and the ‘world of appearances’, which is determined and in which we are not wholly free. The interaction between the two (in which all humans are engaged) is the ‘dialectic of reason’. In this sense, our actions may depart from the categorical imperative- yet we know this is a compromise of our own freedom.
He says “we recognize the validity of the categorical imperative, and allow ourselves a few exceptions to it, which are, as it seems to us, insignificant or forced upon us.”
I recommend reading Kant’s Groundwork- a short text (only about 60 pages), and really convincing, in my humble opinion. He is certainly not a psychopath- but quite sensitive to human reality- that we live in a world of comprise, between our freedom and being determined. But the axiom stands, even and we continue to recognize it, even if we are compelled in some way to make an exception.