Denmark's foremost philosopher and religious writer, Søren Kierkegaard (1813-1855) maintained a journal throughout his adult life that amounted to more than 7,000 pages of alternative drafts of published works, biographical events, musings, and outpourings. A precursor of the Existential movement and a major influence on modern Protestant theology, Kierkegaard confided to his journal further reflections on the ideas developed in his philosophical and theological works, and on his tumultuous career as an author.