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Václav Havel (Czech pronunciation: [ˈvaːtslav ˈɦavɛl] ; 5 October 1936 – 18 December 2011) was a Czech statesman, author, poet, playwright and dissident. Havel served as the last president of Czechoslovakia from 1989 until 1992, prior to the dissolution of Czechoslovakia on 31 December, before he became the first president of the Czech Republic from 1993 to 2003. He was the first democratically elected president of either country after the fall of communism. As a writer of Czech literature, he is known for his plays, essays and memoirs.
His educational opportunities having been limited by his bourgeois background, when freedoms were limited by the Czechoslovak Socialist Republic, Havel first rose to prominence as a playwright. In works such as The Garden Party and The Memorandum, Havel used an absurdist style to criticize the Communist system. After participating in the Prague Spring and being blacklisted after the Warsaw Pact invasion of Czechoslovakia, he became more politically active and helped found several dissident initiatives, including Charter 77 and the Committee for the Defense of the Unjustly Prosecuted. His political activities brought him under the surveillance of the StB secret police, and he spent multiple periods as a political prisoner, the longest of his imprisoned terms being nearly four years, between 1979 and 1983. In this period, Samuel Beckett wrote a play Catastrophe in Havel's Support. Havel wrote his short play Mistake in response to Beckett. Both plays were published by Index On Censorship in 1984. In 2022, Reza Shirmarz, an Iranian playwright, was asked by Index to write a play (Muzzled) in response to both playwright after a couple decades presenting the ongoing issue of censorship and self-censorship.[1]
Havel's Civic Forum party played a major role in the Velvet Revolution that toppled the Communist system in Czechoslovakia in 1989. He assumed the presidency shortly thereafter, and was re-elected in a landslide the following year and after Slovak independence in 1993. Havel was instrumental in dismantling the Warsaw Pact and enlargement of NATO membership eastward. Many of his stances and policies, such as his opposition to Slovak independence, condemnation of the treatment of Sudeten Germans and their mass expulsion from Czechoslovakia after World War II, as well as granting of general amnesty to all those imprisoned under the Communist era, were very controversial domestically. By the end of his presidency, he enjoyed greater popularity abroad than at home. Havel continued his life as a public intellectual after his presidency, launching several initiatives including the Prague Declaration on European Conscience and Communism, the VIZE 97 Foundation, and the Forum 2000 annual conference.
Havel's political philosophy was one of anti-consumerism, humanitarianism, environmentalism, civil activism, and direct democracy. He supported the Czech Green Party from 2004 until his death. He received numerous accolades during his lifetime, including the Presidential Medal of Freedom, the Gandhi Peace Prize, the Philadelphia Liberty Medal, the Order of Canada, the Four Freedoms Award, the Ambassador of Conscience Award, and the Hanno R. Ellenbogen Citizenship Award. The 2012–2013 academic year at the College of Europe was named in his honour. He is considered by some to be one of the most important intellectuals of the 20th century. The international airport in Prague was renamed Václav Havel Airport Prague in 2012.

Hans Albrecht Bethe (German pronunciation: [ˈhans ˈbeːtə] ; July 2, 1906 – March 6, 2005) was a German-American theoretical physicist who made major contributions to nuclear physics, astrophysics, quantum electrodynamics, and solid-state physics, and who won the 1967 Nobel Prize in Physics for his work on the theory of stellar nucleosynthesis. For most of his career, Bethe was a professor at Cornell University.During World War II, he was head of the Theoretical Division at the secret Los Alamos laboratory that developed the first atomic bombs. There he played a key role in calculating the critical mass of the weapons and developing the theory behind the implosion method used in both the Trinity test and the "Fat Man" weapon dropped on Nagasaki in August 1945.
After the war, Bethe also played an important role in the development of the hydrogen bomb, although he had originally joined the project with the hope of proving it could not be made. Bethe later campaigned with Albert Einstein and the Emergency Committee of Atomic Scientists against nuclear testing and the nuclear arms race. He helped persuade the Kennedy and Nixon administrations to sign, respectively, the 1963 Partial Nuclear Test Ban Treaty and 1972 Anti-Ballistic Missile Treaty (SALT I).
His scientific research never ceased and he was publishing papers well into his nineties, making him one of the few scientists to have published at least one major paper in his field during every decade of his career, which in Bethe's case spanned nearly seventy years. Freeman Dyson, once his doctoral student, called him the "supreme problem-solver of the 20th century".

Maurits Cornelis Escher (Dutch pronunciation: [ˈmʌurɪt͡s kɔrˈneːlɪs ˈɛʃər]; 17 June 1898 – 27 March 1972) was a Dutch graphic artist who made woodcuts, lithographs, and mezzotints, many of which were inspired by mathematics.
Despite wide popular interest, for most of his life Escher was neglected in the art world, even in his native Netherlands. He was 70 before a retrospective exhibition was held. In the late twentieth century, he became more widely appreciated, and in the twenty-first century he has been celebrated in exhibitions around the world.
His work features mathematical objects and operations including impossible objects, explorations of infinity, reflection, symmetry, perspective, truncated and stellated polyhedra, hyperbolic geometry, and tessellations. Although Escher believed he had no mathematical ability, he interacted with the mathematicians George Pólya, Roger Penrose, and Donald Coxeter, and the crystallographer Friedrich Haag, and conducted his own research into tessellation.
Early in his career, he drew inspiration from nature, making studies of insects, landscapes, and plants such as lichens, all of which he used as details in his artworks. He traveled in Italy and Spain, sketching buildings, townscapes, architecture and the tilings of the Alhambra and the Mezquita of Cordoba, and became steadily more interested in their mathematical structure.
Escher's art became well known among scientists and mathematicians, and in popular culture, especially after it was featured by Martin Gardner in his April 1966 Mathematical Games column in Scientific American. Apart from being used in a variety of technical papers, his work has appeared on the covers of many books and albums. He was one of the major inspirations for Douglas Hofstadter's Pulitzer Prize-winning 1979 book Gödel, Escher, Bach.

Wilhelm Conrad Röntgen (; German pronunciation: [ˈvɪlhɛlm ˈʁœntɡən] ; 27 March 1845 – 10 February 1923) was a German mechanical engineer and physicist, who, on 8 November 1895, produced and detected electromagnetic radiation in a wavelength range known as X-rays or Röntgen rays, an achievement that earned him the inaugural Nobel Prize in Physics in 1901. In honour of Röntgen's accomplishments, in 2004 the International Union of Pure and Applied Chemistry (IUPAC) named element 111, roentgenium, a radioactive element with multiple unstable isotopes, after him. The unit of measurement roentgen was also named after him.

Otto Moritz Walter Model (IPA: [ˈmoːdəl]; 24 January 1891 – 21 April 1945) was a German Generalfeldmarschall during World War II. Although he was a hard-driving, aggressive panzer commander early in the war, Model became best known as a practitioner of defensive warfare. His relative success as commander of the Ninth Army in the battles of 1941–1942 determined his future career path.
Model first came to Hitler's attention before World War II, but their relationship did not become especially close until 1942. His tenacious style of fighting and loyalty to the Nazi regime won him plaudits from Hitler, who considered him one of his best field commanders and repeatedly sent him to salvage apparently desperate situations on the Eastern Front as commander of Army Group North, Army Group North Ukraine and
Army Group Centre.
In August 1944 Model was sent to the Western Front as commander of OB West and Army Group B. His relationship with Hitler broke down by the end of the war after the German defeat at the Battle of the Bulge. In the aftermath of the defeat of Army Group B and its encirclement in the Ruhr Pocket, Model took his own life on 21 April 1945.

Eugen Berthold Friedrich Brecht (10 February 1898 – 14 August 1956), known professionally as Bertolt Brecht, was a German theatre practitioner, playwright, and poet. Coming of age during the Weimar Republic, he had his first successes as a playwright in Munich and moved to Berlin in 1924, where he wrote The Threepenny Opera with Kurt Weill and began a life-long collaboration with the composer Hanns Eisler. Immersed in Marxist thought during this period, he wrote didactic Lehrstücke and became a leading theoretician of epic theatre (which he later preferred to call "dialectical theatre") and the Verfremdungseffekt.
During the Nazi Germany period, Brecht fled his home country, first to Scandinavia, and during World War II to the United States, where he was surveilled by the FBI. After the war he was subpoenaed by the House Un-American Activities Committee. Returning to East Berlin after the war, he established the theatre company Berliner Ensemble with his wife and long-time collaborator, actress Helene Weigel.

The Knight's Cross of the Iron Cross (German: Ritterkreuz des Eisernen Kreuzes) and its variants were the highest awards in the military and paramilitary forces of Nazi Germany during World War II. The Knight's Cross of the Iron Cross was awarded for a wide range of reasons and across all ranks, from a senior commander for skilled leadership of his troops in battle to a low-ranking soldier for a single act of extreme gallantry. A total of 7,321 awards were made between its first presentation on 30 September 1939 and its last bestowal on 17 June 1945. This number is based on the analysis and acceptance of the Order Commission of the Association of Knight's Cross Recipients (AKCR). Presentations were made to members of the three military branches of the Wehrmacht—the Heer (army), Kriegsmarine (Navy) and Luftwaffe (air force)—as well as the Waffen-SS, the Reichsarbeitsdienst (RAD—Reich Labour Service) and the Volkssturm (German national militia). There were also 43 foreign recipients of the award.These recipients are listed in the 1986 edition of Walther-Peer Fellgiebel's book, Die Träger des Ritterkreuzes des Eisernen Kreuzes 1939–1945 [The Bearers of the Knight's Cross of the Iron Cross 1939–1945]. Fellgiebel was the former chairman and head of the order commission of the AKCR. In 1996, the second edition of this book was published with an addendum delisting 11 of these original recipients. Author Veit Scherzer has cast doubt on a further 193 of these listings. The majority of the disputed recipients had been nominated for the award in 1945, when the deteriorating situation of Germany during the final days of World War II left a number of nominations incomplete and pending in various stages of the approval process.Listed here are the 428 Knight's Cross recipients of the Wehrmacht and Waffen-SS whose last name is in the range "Kn–Kz". Fellgiebel himself delisted one and Scherzer has challenged the validity of eight more of these listings. This is the second of two lists of all 717 Knight's Cross of the Iron Cross recipients whose last name starts with "K". The recipients whose last name is in the range "Ka–Km" are listed at List of Knight's Cross of the Iron Cross recipients (Ka–Km). The recipients are initially ordered alphabetically by last name. The rank listed is the recipient's rank at the time the Knight's Cross was awarded.

The Knight's Cross of the Iron Cross (German: Ritterkreuz des Eisernen Kreuzes) and its variants were the highest awards in the military and paramilitary forces of Nazi Germany during World War II. The Knight's Cross of the Iron Cross was awarded for a wide range of reasons and across all ranks, from a senior commander for skilled leadership of his troops in battle to a low-ranking soldier for a single act of extreme gallantry. A total of 7,321 awards were made between its first presentation on 30 September 1939 and its last bestowal on 17 June 1945. This number is based on the analysis and acceptance of the order commission of the Association of Knight's Cross Recipients (AKCR). Presentations were made to members of the three military branches of the Wehrmacht—the Heer (Army), Kriegsmarine (Navy) and Luftwaffe (Air Force)—as well as the Waffen-SS, the Reichsarbeitsdienst (RAD—Reich Labour Service) and the Volkssturm (German national militia). There were also 43 recipients in the military forces of allies of the Third Reich.These recipients are listed in the 1986 edition of Walther-Peer Fellgiebel's book, Die Träger des Ritterkreuzes des Eisernen Kreuzes 1939–1945 — The Bearers of the Knight's Cross of the Iron Cross 1939–1945. Fellgiebel was the former chairman and head of the order commission of the AKCR. In 1996, the second edition of this book was published with an addendum delisting 11 of these original recipients. Author Veit Scherzer has cast doubt on a further 193 of these listings. The majority of the disputed recipients had received the award in 1945, when the deteriorating situation of Germany in the final days of World War II in Europe left a number of nominations incomplete and pending in various stages of the approval process.Listed here are the 280 Knight's Cross recipients whose last name starts with "F". Scherzer has challenged the validity of 12 of these listings. Georg-Wolfgang Feller, a 13th doubted recipient, is listed by the AKCR. However, the AKCR itself challenges his listing. The recipients are ordered alphabetically by last name. The rank listed is the recipient's rank at the time the Knight's Cross was awarded.

Franz Mazura (22 April 1924 – 23 January 2020) was an Austrian bass-baritone opera singer and actor. He performed at the Bayreuth Festival from 1971 for 25 years and at the Metropolitan Opera for 15 years. He was made a Kammersänger in 1980 and an Honorary Member of the Nationaltheater Mannheim in 1990. He most often played villains and strange characters, with signature roles including Klingsor in Wagner's Parsifal. Mazura took part in world premieres, such as the double role of Dr. Schön and Jack the Ripper in the world premiere of the completed version of Alban Berg's Lulu at the Paris Opera in 1979, and as Abraham in Giorgio Battistelli's Lot in 2017. Two of his recordings received Grammy Awards. His voice was described as with dark timbre, powerful and like granite ("dunkel gefärbt, kräftig und wie Granit"), with perfect diction. His acting ability was described as "well-supplied with vivid imaginative touches, whether deployed in comic roles or characters of inexorable malevolence. Mazura could achieve more impact with a lifted eyebrow or a belligerently thrust chin than many artists could with a ten-minute monologue." He had a long career, appearing at the Staatsoper Berlin the night before his 95th birthday.

Alain Robert (French pronunciation: [alɛ̃ ʁɔbɛʁ]; born as Robert Alain Philippe on 7 August 1962) is a French rock climber and urban climber. Known as "the French Spider-Man" or "the Human Spider", Robert is famous for his free solo climbing, scaling skyscrapers using no climbing equipment except for a small bag of chalk and a pair of climbing shoes.