On the Idea of an Unconditional (Moral) Rule
In his Foundations of the Metaphysics of Morals Kant argued that the moral law (assuming there is one) must be unconditional and universal. As part of that argument he made a famous distinction between categorical and hypothetical imperatives. Imperatives are βoughtβ (or βshouldβ) statements, such as βyou ought to tell the truthβ. The difference between the two kinds of imperatives is that hypothetical imperatives depend on a specific kind of condition, namely a desire, while categorical imperatives are universal, unconditional, and absolute. Thus, βif you want human civilization to survive the 21st century, you ought to eat the richβ is...