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  • Fiat justitia, pereat mundus”. Let justice be done, though the world perish. This quotation,

  • taken from Kant’s 1795 Perpetual Peace, neatly sums up his philosophical position,

  • namely that people have moral duties which they must necessarily follow. Such duty is

  • revealed to us through reason, and is an unconditional obligation, which must be realised regardless

  • of an individual’s own will or desire. This position, reflecting Kant’s deontological

  • philosophy (which focuses on the morality of actions rather than their consequences),

  • contrasts with the prevailing utilitarian philosophy of the late 18th century (which

  • focuses on the morality and desirability of ends rather than means). It is categorical

  • in the sense that it applies universally and without conditions; it is an imperative in

  • that it is a command which has to be followed without question.

  • The Categorical Imperative Kant himself defined the categorical imperative

  • as a process by which you should "Act only according to that maxim whereby you can at

  • the same time will that it should become a universal law." For example, you personally

  • must follow the categorical imperativethou shalt not killif you believe that everybody

  • should follow this imperative. Since it is a duty, it is necessary to follow the categorical

  • imperative even when there seems to be no harm in not doing so. For example, if you

  • find yourself in a car, at a red stop light early in the morning when there are no other

  • cars on the road. Should you drive through, knowing that there is no chance you will cause

  • an accident to anyone? If you decide to do so (if you will this action), you are accepting

  • the universality of this actionnamely that anyone can go through any red light at

  • any time they choose, regardless of the specific situation. It is this universality which differentiates

  • the categorical imperative from the Golden Rule, with which it is often confused. Whereas

  • the Golden Rule focuses on the self, the individual (i.e. you should treat others as you would

  • want yourself to be treated), the Categorical Imperative is universal.

  • Categorical Imperative vs Hypothetical Imperative Since the categorical imperative follows the

  • moral law, conditionality can never be attached to the categorical imperative. This said,

  • Kant was a realist: he does not think people should do what is impossible for them. Moral

  • statements are prescriptive, meaning that “I ought to do somethingis the same

  • as “I can do something.” The categorical imperative thus contrasts with a hypothetical

  • imperative, which applies only conditionally. Whereas the categorical imperative would say

  • Do X”, a hypothetical imperative would sayDo X in order to achieve Y.” If we

  • actually analyse the constituent parts of a hypothetical imperative, we need to ascertain,

  • firstly, whether “Y” is in fact a moral objective, secondly whether doing “X”

  • is moral as well and thirdly whether doing “X” will actually lead to “Y” in any

  • case.

  • Criticisms of the Categorical Imperative One of the strongest challenges to the categorical

  • imperative came from the French philosopher Bejamin Constant, who argued that since telling

  • the truth must be universal then it follows that one must, if asked, tell a known murderer

  • the whereabouts of his intended victim. Kant agreed with Constant’s position, but denied

  • that it weakened his premise, since moral actions do not derive their value from the

  • expected consequences.

  • Conclusion Kant argues that humans occupy a special place

  • in creation because of their reason. As such, this is a serious responsibility which should

  • not be taken lightly. Although the categorical imperative is often in battle with our natural

  • wants and desires, immortality stems from a violation of the categorical imperative,

  • and therefore it must be followed at all times. Morality comes from doing what is right, whatever

  • the consequences may be.

Fiat justitia, pereat mundus”. Let justice be done, though the world perish. This quotation,

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