While in the other hand the Kantian ethics is what defines us as a person is our rationality and autonomy, Kantian ethics also have a very different conception of what is right and wrong, Kantian ethics believe that good actions will respect other people right and choices.
Story of doctor x.
To show the difference between a utilitarian and a Kantian let’s analyze the story from the two different theories perspective, from a utilitarian point of view a utilitarian will always wants to maximize happiness and this is happened by that millions were cured and their families are happy and pain was minimized too by killing only one man that have no family so in a utilitarian view the killing the homeless man to cure millions was justified. While in a Kantian point of view the homeless man’s rights of living and what happens to his body were violated, he was not given a choice, he was killed. In Kantian view consequences are not justification of what doctor x did to the homeless man.
The main differences between Kant’s and Utilitarianism are summarized as following
As a utilitarian
Morality is empirical matter (it is what we have learned from experience) , motivations and intentions does not matter, persons are intrinsically valuable, there is no absolute rules that can be applied, morality is very closely connected to desire and the most important point is only consequences matter
As a Kantian
Persons have intrinsic worth, morality is not empirical it is rational, motivations and intentions have the