The Concept of Anxiety
The Concept of Anxiety (): "A Simple Psychologically Orienting Deliberation on the Dogmatic Issue of Hereditary Sin", is a philosophical work written by Danish philosopher Søren Kierkegaard in 1844. The original 1944 English translation by Walter Lowrie (now out of print), had the title The Concept of Dread. "The Concept of Anxiety" was dedicated "to the late professor Poul Martin Møller". He used the pseudonym Vigilius Haufniensis (which, according to Kierkegaard scholar Josiah Thompson, is the Latin transcription for "the Watchman" of Copenhagen) for "The Concept of Anxiety".
Hannah Arendt
Already in this work some of the leitmotifs of her canon were apparent. For instance, she introduced the concept of "" (Natality) as a key condition of human existence and its role in the development of the individual. She made clear, in her revisions to the English translation, through explicit reference, that it was "natality" that she was introducing, and would develop further in "The Human Condition" (1958). Although she did not specifically use the word "Natalität" in the original German version, she explained that the construct of natality was implied in her discussion of new beginnings and man's elation to the Creator as "nova creatura". The centrality of the theme of birth and renewal is apparent in the constant reference to Augustinian thought, and specifically the innovative nature of birth, from this, her first work, to her last, "The Life of the Mind".