Kritik der praktischen Vernunft
Søren Kierkegaard believed Kantian autonomy was insufficient and that, if unchecked, people tend to be lenient in their own cases, either by not exercising the full rigor of the moral law or by not properly disciplining themselves of moral transgressions. However, many of Kierkegaard's criticisms on his understanding of Kantian autonomy, neglect the evolution of Kant's moral theory from the "Groundwork of Metaphysics of Morals", to the second and final critiques respectively, "The Critique of Practical Reason, The Critique of Moral Judgment," and his final work on moral theory the "Metaphysics of Morals"