young girl." The old man in this statement is said to be his father while Olsen was the girl. Martin Buber said "Kierkegaard does not marry in defiance of the whole nineteenth century". Kierkegaard then turned his attention to his examinations. On 13 May 1839, he wrote, "I have no alternative than to suppose that it is God's will that I prepare for my examination and that it is more pleasing to Him that I do this than actually coming to some clearer perception by immersing myself in one or another sort of research, for obedience is more precious to him than the fat of rams." The death of his father and the death of Poul Møller also played a part in his decision. On 29 September 1841, Kierkegaard wrote and defended his master's thesis, On the Concept of Irony with Continual Reference to Socrates. The university panel considered it noteworthy and thoughtful, but too informal and witty for a serious academic thesis. The thesis dealt with irony and Schelling's 1841 lectures, which Kierkegaard had attended with Mikhail Bakunin, Jacob Burckhardt, and Friedrich Engels; each had come away with a different perspective. Kierkegaard graduated from university on 20 October 1841 with a Magister Artium (Master of Arts). His family's inheritance of approximately 31,000 rigsdaler enabled him to fund his work and living expenses including servants. 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 , he wrote his first book under the pseudonym "Johannes Climacus" (after John Climacus) between 1841 and 1842. De omnibus dubitandum est