Question: Who was born first, Herta Müller or Arthur Koestler?

Context paragraphs:
The Land of Green Plums: The Land of Green Plums (German: "Herztier" ) is a novel by Herta Müller, published in 1994 by Rowohlt Verlag.  Perhaps Müller's best-known work, the story portrays four young people living in a totalitarian police state under the Soviet-imposed communist dictatorship in Romania, ending with their emigration to Germany.  The narrator is an unidentified young woman belonging to the ethnic German minority.  Müller said the novel was written "in memory of my Romanian friends who were killed under the Ceauşescu regime".

Der Fuchs war damals schon der Jäger: Der Fuchs war damals schon der Jäger is a book by Nobel Prize-winning author Herta Müller.  Def Fuchs war damals schon der Jäger is a novelization of the script for the film Der Fuchs der Jäger, which was produced alongside of Harry Merkel.  Def Fuchs war damals schon der Jäger was first published in 1992 and is read as if it were a film, because Herta Müller wholly retains its cinematic character in the piece.  Happel called the book "emotionless" and "objective".

Holon (philosophy): A holon (Greek: "ὅλον, holon" neuter form of "ὅλος, holos" "whole") is something that is simultaneously a whole and a part.  The word was coined by Arthur Koestler in his book "The Ghost in the Machine" (1967, p. 48).  Koestler was influenced by two observations in proposing the notion of the holon.  The first observation was influenced by Herbert A. Simon's parable of the two watchmakers—in which Simon concludes that complex systems evolve from simple systems much more rapidly when there are stable intermediate forms present in the evolutionary process than if they are not present.  The second observation was made by Koestler himself in his analysis of hierarchies and stable intermediate forms in non-living matter (atomic and molecular structure), living organisms, and social organizations.  He concluded that, although it is easy to identify sub-wholes or parts, wholes and parts in an absolute sense do not exist anywhere.  Koestler proposed the word holon to describe the hybrid nature of sub-wholes and parts within in vivo systems.  From this perspective, holons exist simultaneously as self-contained wholes in relation to their sub-ordinate parts, and as dependent parts when considered from the inverse direction.

Herta Müller: Herta Müller (born 17 August 1953) is a Romanian-born German novelist, poet, essayist and recipient of the 2009 Nobel Prize in Literature.  Born in Nițchidorf, Timiș County in Romania, her native language is German.  Since the early 1990s she has been internationally established, and her works have been translated into more than twenty languages.

Living with Koestler: Living with Koestler: Mamaine Koestler's Letters 1945–51 is a book about the author Arthur Koestler and Mamaine Paget, Koestler’s second wife.  More specifically, it is a selected compilation of Mamaine’s letters to her twin sister Celia about her life with Koestler.  The spontaneous and engaging letters reflect the intensity of her life with Koestler between 1945 and 1951.

Der Teufel sitzt im Spiegel: Der Teufel sitzt im Spiegel (The Devil Sits in the Mirror) is a book by Nobel Prize-winning author Herta Müller.  It was first published in 1991 after Müller's emigration to Germany and is cited in 2010's "History of the Literary Cultures of East Central Europe", along with "Traveling on One Leg" and "The Land of Green Plums", as drawing attention to her work in the West.  Titled for a cautionary proverb which Müller's grandmother used to say to her—a warning against a variety of evils including vanity, sexual self-awareness and self-reflection in general, each of which could precede a fall, the book is a collection of essays about writing and literature built around the theme.

Arthur Koestler: The Story of a Friendship: Arthur Koestler: The Story of a Friendship is a book by George Mikes published in 1983, soon after Arthur Koestler’s suicide.  As the author states in the Introduction, the book is not a biography of the subject but a series of recollections and anecdotes of a friendship spanning more than thirty years from 1952 up to the time of Koestler’s suicide in March 1983.

Arthur Koestler (book): "Arthur Koestler" is a book by Mark Levene published in 1984, a year after Arthur Koestler's suicide.  The book is divided into seven main chapters, of which the first of is a biography and the other six critical essays on each of Koestler's six novels, his stories and his play "Twilight Bar".

The Passport: The Passport (German: "Der Mensch ist ein großer Fasan auf der Welt" ) is a novel by Nobel Prize-winning author Herta Müller, published in German in 1986.  The German title (literally, "Man is a great pheasant in the world") refers to a saying in Romania.  The novel, one of several for which the author was known when winning the Nobel in 2009, tells the story of a village miller in a German-speaking village in the Banat in Romania, who applies for permission to emigrate to West Germany.  The novel was published in English by Serpent's Tail in 1989, the first of Müller's novels to be offered in direct translation.

Arthur Koestler: Arthur Koestler, ( ; ] ; Hungarian: "Kösztler Artúr" ; 5 September 1905 – 1 March 1983) was a Hungarian-British author and journalist.  Koestler was born in Budapest and, apart from his early school years, was educated in Austria.  In 1931 Koestler joined the Communist Party of Germany until, disillusioned by Stalinism, he resigned in 1938.  In 1940 he published his novel "Darkness at Noon", an anti-totalitarian work that gained him international fame.  Over the next 43 years, from his residence in Britain, Koestler espoused many political causes, and wrote novels, memoirs, biographies and numerous essays.  In 1968 he was awarded the Sonning Prize "for [his] outstanding contribution to European culture" and in 1972 he was made a Commander of the Order of the British Empire (CBE).  In 1976 he was diagnosed with Parkinson's disease and in 1979 with terminal leukaemia.  In 1983 he and his wife committed suicide at their home in London.

Supporting paragraphs: Herta Müller Arthur Koestler
Answer: Arthur Koestler