Søren Kierkegaard notable work Fear and Trembling
Authorship (1843–1846)
Kierkegaard published some of his works using pseudonyms and for others he signed his own name as author. Whether being published under pseudonym or not, Kierkegaard's central writing on religion was Fear and Trembling, and Either/Or is considered to be his magnum opus. Pseudonyms were used often in the early 19th century as a means of representing viewpoints other than the author's own. Kierkegaard employed the same technique as a way to provide examples of indirect communication. In writing under various pseudonyms to express sometimes contradictory positions, Kierkegaard is sometimes criticized for playing with various viewpoints without ever committing to one in particular. He has been described by those opposing his writings as indeterminate in his standpoint as a writer, though he himself has testified to all his work deriving from a service to Christianity. After On the Concept of Irony with Continual Reference to Socrates, his 1841 master's thesis under Frederik Christian Sibbern, he wrote his first book under the pseudonym "Johannes Climacus" (after John Climacus) between 1841 and 1842. De omnibus dubitandum est (Latin: "Everything must be doubted") was not published until after his death.
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