Kierkegaard is an exegetical interpretation of Søren Kierkegaard's Philosophical Fragments and Concluding Unscientific Postscript. Vivaldi Jean-Marie elaborates on the philosophical and religious arguments of the pseudonym Johannes Climacus to demonstrate that history is propatory toward the achievement of eternal happiness. The author emphasizes Kierkegaard's heritage in the Post-Kantian tradition by discussing his critique of the Romantics and German Idealists. The exposition of Philosophical Fragments and Concluding Unscientific Postscript is carried out on the basis of the ongoing conversation between Climacus and the Post-Kantian tradition to argue that Climacus wishes to show the limitation of history and philosophy and the necessity of subjective appropriation to transcend the shortcoming of history and philosophy. Climacus's assessment of the prevailing Christian attitudes of the 19th century maps out the possibility of subjective religious experience in freedom.