Pitirim Alexandrovich Sorokin (Russian Питири́м Алекса́ндрович Соро́кин; January 21, 1889, Turja north of Syktyvkar, Yarensk uyezd, Vologda Governorate (now Knyazhpogostsky District, Komi), Russian Empire – February 11, 1968, Winchester, Massachusetts) was a Russian American sociologist born in modern-day Komi (Finno-Ugric region of Russia). An academic and political activist in Russia, he emigrated from Russia to the United States in 1923. In 1930 at age 40, Sorokin was personally requested by the president of Harvard University to accept a position there. At Harvard, he founded the Department of Sociology. He was a vocal critic of his colleague Talcott Parsons. Sorokin was an ardent opponent of communism, which he regarded as a "pest of man." He is best known for his contributions to the social cycle theory.
Oswald Manuel Arnold Gottfried Spengler (29 May 1880 – 8 May 1936) was a German historian and philosopher whose interests also included mathematics, science, and art. He is best known for his book The Decline of the West (Der Untergang des Abendlandes), published in 1918 and 1922, where he proposed a new theory, according to which the lifespan of civilizations is limited and ultimately they decay. In 1920 Spengler produced Prussiandom and Socialism (Preußentum und Sozialismus), which argued for an organic, nationalist version of socialism and authoritarianism. He wrote extensively throughout World War I and the interwar period, and supported German hegemony in Europe. Some National Socialists (such as Goebbels) held Spengler as an intellectual precursor but he was ostracised after 1933 for his pessimism about Germany's and Europe's future, his refusal to support Nazi ideas of racial superiority, and his critical work The Hour of Decision.
Oswald Spengler was born in 1880 in Blankenburg (then in the Duchy of Brunswick, German Empire) at the foot of the Harz mountains, the eldest of four children, and the only boy. His family was conservative German petite bourgeoisie. His father, originally a mining technician, who came from a long line of mineworkers, was a post office bureaucrat. His childhood home was emotionally reserved, and the young Spengler turned to books and the great cultural personalities for succor. He had imperfect health, and suffered throughout his life from migraine headaches and from an anxiety complex.
Martin Luther King, Jr. (January 15, 1929 – April 4, 1968) was an American clergyman, activist, and prominent leader in the African-American Civil Rights Movement. He is best known for his role in the advancement of civil rights in the United States and around the world, using nonviolent methods following the teachings of Mohandas Karamchand Gandhi. King has become a national icon in the history of modern American liberalism.
A Baptist minister, King became a civil rights activist early in his career. He led the 1955 Montgomery Bus Boycott and helped found the Southern Christian Leadership Conference (SCLC) in 1957, serving as its first president. King's efforts led to the 1963 March on Washington, where King delivered his "I Have a Dream" speech. There, he established his reputation as one of the greatest orators in American history.
In 1964, King became the youngest person to receive the Nobel Peace Prize for his work to end racial segregation and racial discrimination through civil disobedience and other nonviolent means. By the time of his death in 1968, he had refocused his efforts on ending poverty and stopping the Vietnam War.