 The apparent failure of Kant’s argument to establish the autonomy of the will, and hence the authority of moral demands over us, has not deterred his followers from trying to make good on this project. One strategy favored recently has been to turn back to the arguments of Groundwork II for help. Kant himself repeatedly claimed that these arguments are merely analytic but that they do not establish that there is anything that answers to the concepts he analyzes. The conclusions are thus fully compatible with morality being, as he puts it, a “mere phantom of the brain” (G 4:445). Kant clearly takes himself to have established that rational agents such as ourselves must take the means to our ends, since this is analytic of rational agency. But there is a chasm between this analytic claim and the supposed synthetic conclusion that rational agency also requires conforming to a further, non-desire based, principle of practical reason such as the CI. Nevertheless, some see arguments in Groundwork II that establish just this. These strategies involve a new “teleological” reading of Kant’s ethics that relies on establishing the existence of an absolute value or an “end in itself” (we say more about this teleological reading below). They begin with Kant’s own stated assumption that there is such an end in itself if and only if there is a categorical imperative binding on all rational agents as such. If this assumption is true, then if one can on independent grounds prove that there is something which is an end in itself, one will have an argument for a categorical imperative. One such strategy, favored by Korsgaard (1996) and Wood (1999) relies on the apparent argument Kant gives that humanity is an end in itself. Guyer, by contrast, sees an argument for freedom as an end in itself (Guyer 2000). Both strategies have faced textual and philosophical hurdles. Considerable interpretive finesse, for instance, is required to explain Kant’s stark insistence on the priority of principles and law over the good in the second Critique (CPrR 5:57–67)