Kantian Ethics and Universal Maxims

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Explain Kant’s understanding of universal maxims.

     Immanuel Kant argued that morality is a matter of following absolute rules – rules that admit no exceptions and appeal not to religious considerations but to reason.

     Kant observed that the word ‘ought’ is often used non-morally for example, ‘If you want to become a better artist, I ought to study this book.’ We have a certain wish and, recognizing that a certain course of action would help us fulfil this wish, we follow this course of action. Kant called this the hypothetical imperative; telling us what we ought to do if we want to fulfil our wishes.

     In contrast, Kant observed that moral obligations do not depend on particular wishes or desires. The form of a moral obligation is not ‘If you want something, you ought to do such-and-such,’ Instead, moral requirements are categorical, that is, ‘You ought to do such-and-such’ regardless of your particular wishes and desires.

     Hypothetical ‘oughts’ are easy to understand – we merely choose the means necessary to achieve the ends we desire. They are possible because human beings have wishes and desires. Categorical ‘oughts’, however, are possible because we have reason – which is binding on rational agents simply because they are rational. But why? Kant argues that categorical oughts are derived from a principle, called the categorical imperative (sometimes called the formula of universal law, or formula of the kingdom of ends). This states:

Act only according to that maxim by which you can at the same time will that it should become a universal law’.

     Kant illustrated the categorical imperative with the example of telling lies. His reasoning went something like this: a man is so poor that even if he borrows money he will not be able to repay the loan. The debt collectors are threatening action. The man asks himself whether he should borrow money from his friend to get the debt collectors to leave him alone, knowing that he will not be able to repay his friend. If he were to go down this path and borrow money, his maxim would be: ‘Whenever you need a loan, promise to repay it, even though you know you cannot do so.’

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     Could this maxim become a universal law? No, says Kant. If it did, people would no longer believe each other and nobody would lend money. Such a maxim, therefore, would be self-defeating. Kant argued that lying was always wrong. We would not reasonably want lying to become a universal law – people would quickly learn not to trust anybody and there would be chaos. If a lie is to become successful, people must believe that others are telling the truth; so the success of a lie depends on there not being a ‘universal law’ permitting it.

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