Among the largest in the history of thought. His personality and his work have been described as "tumultuous, overflowing, irrepressible" and have been constantly subjected to diverse interpretations by the philosophical and theological currents that have followed. Cornered at first for his clash with established Christianity, was rescued by G. Brandes, T. S. M. Haecker and Heidegger. A Spain came through early and Høffding Unamuno, who called him "the brother Kierkegaard," but soon fell into oblivion, despite efforts of authors like Aranguren and Valverde. Recently there has been renewed interest in his magnificent work and his disturbing personality, the result of which are the numerous studies and conferences about their thinking and the new critical edition of his writings. In the framework of the Spanish edition of the Writings of Søren Kierkegaard, based on the critical edition Danish, have already been published: Writings 1. papers someone still living. The concept of irony (22006); Writings 2 O one or the other. A slice of life I (2006); Writings 3 Or one or the other. A fragment of Life II (2007) and Philosophical Fragments or a little philosophy (52007). Kierkegaard have also been published in this same Editorial The Moment (2006), Lilies of the field and the birds of the sky (2007) and The deadly disease (2008) Exercising of Christianity (2009).