By comparing the theories of evil found in Kant and Kierkegaard, this article aims to shed new light on Kierkegaard, as well as on the historical and conceptual relations between the two philosophers. The author shows that there is considerable overlap between Kant's doctrine of radical evil and Kierkegaard's views on guilt and sin and argues that Kierkegaard approved of the doctrine of radical evil. Although Kierkegaard's distinction between guilt and sin breaks radically with Kant, there are more Kantian elements (...) in Kierkegaard than was shown by earlier scholarship. Finally, Kierkegaard provides an alternative solution to the problem of the universality of guilt, a problem much discussed in the literature on Kant. (shrink)