Kant’s coherent theory of the highest good

In the second Critique, Kant argues that for the highest good to be possible we need to postulate the existence of God and the immortality of the soul in a future world. In his other writings, however, he suggests that the highest good is attainable through mere human agency in this world. Based on the apparent incoherence between these texts, Andrews Reath, among others, argues that Kant’s texts reveal two competing conceptions of the highest good, namely a secular and a theological conception. In this paper, I argue that Kant has a coherent conception of the highest good which applies to two different domains, namely the domain of the individual humans and the domain of the human species.