Concluding Unscientific Postscript to the Philosophical Fragments () is a major work by Søren Kierkegaard. The work is an attack against Hegelianism, the philosophy of Hegel, and especially Hegel's Science of Logic. The work is also famous for its dictum, Subjectivity is Truth. It was an attack on what Kierkegaard saw as Hegel's deterministic philosophy. Against Hegel's system, Kierkegaard is often interpreted as taking the side of metaphysical libertarianism or free will, though it has been argued that an incompatibilist conception of free will is not essential to Kierkegaard's formulation of existentialism. As the title suggests, the Postscript is sequel to the earlier Philosophical Fragments. The title of the work is ironic because the Postscript is almost five times larger than the Fragments. The Postscript credits "Johannes Climacus" as the author and Kierkegaard as its editor. Like his other pseudonymous works, the Postscript is not a reflection of Kierkegaard's own beliefs. However, unlike his other pseudonymous works, Kierkegaard attaches his name as editor to this work, showing the importance of the Postscript to Kierkegaard's overall authorship. Contrasts in Concluding Unscientific Postscript Reception Eduard Geismar was an early lecturer on the works of Soren Kierkegaard. He gave lectures at Princeton Theological Seminary in March 1936 and states this about Johannes Climacus: Walter Lowrie characterized Kierkegaard's authorship up to Concluding Postscript as first "Away from the Aesthetical" and then the works ascribed to Johannes Climacus as "Away from Speculation". Emil Brunner mentioned Kierkegaard 51 times in his 1937 book Man in Revolt and wrote a semi-serious parody of Kierkegaard's idea of truth as subjectivity by making truth objectivity in 1947. Herbert Read summed up Kierkegaard's book this way in his 1947 book, The Coat of Many Colors: The Unscientific Postscript is but one more voluminous commentary on the main theme of all Kierkegaard’s work, the dilemma which he represented by the phrase “either-or”: either aesthetic immediacy, which includes not only the eudaemonistic search for pleasure, but also despair (the “sickness unto death”) and religious or metaphysical self-explanation; or the ethical along with the religion of immanence and immediacy and (as its culmination) Christianity apprehended as a paradox. In the Postscript Kierkegaard is chiefly concerned to define the nature of the religious alternative: to make it clear to his readers that it is not a choice between the aesthetic life and any sort of religion, but between true religion and every other possible