The Kierkegaard Studies Yearbook 2005 is devoted to Kierkegaard’s Concluding Unscientific Postscript , which has recently appeared in the new Danish scholarly edition, Søren Kierkegaards Skrifter vol. 7 (2002). Kierkegaard considered this second book, under the pseudonym Johannes Climacus, as the major work of the early period of his authorship. The main section of the Yearbook features papers on this work from leading international Kierkegaard experts, dealing with its historical relations, poetic structures, and philosophical and religious contents respectively. Section 2 is dedicated to articles on the important and varied history of reception of the Postscript and its commentaries in the different languages of the research tradition. Lectures and papers that were given at the Søren Kierkegaard Research Centre during 2004 are published in the third section, this year focused on Kierkegaard's aesthetics and suggestions for a general understanding of his authorship.