Karl Marx, the philosopher, economist, political theorist and socialist revolutionary, is best-known for the 1848 pamphlet, The Communist Manifesto and the three-volume Das Kapital. His theories, called Marxism, maintained that class conflict leads to the development of human societies and that internal tension were inherent in capitalism, which would ultimately be replaced by the socialist mode of production.
Social reformer and abolitionist, Frederick Douglass was a national leader of the abolitionist movement in Massachusetts and New York. Born into slavery, he had a difficult early life. Eventually, he managed to escape and dedicated the rest of his life to promoting the cause of abolition. He was a great orator and writer.
Mary Todd Lincoln was the wife of Abraham Lincoln. She played an important role during the American Civil War as she worked hard to keep the morale of the country high throughout the war. Mary invariably finds a place in stories and biographies written about Abraham Lincoln as she was seated next to him when he was killed.
Alexander II of Russia was the Emperor of Russia, Grand Duke of Finland, and King of Poland from 1855 to 1881. He became known as Alexander the Liberator for his most significant reform, which was the Emancipation Reform of 1861. He is also credited with reorganizing the judicial system, abolishing corporal punishment, and imposing universal military service in Russia.
Almost 2 decades before germ theory was laid down, Ignaz Semmelweis became the first physician to suggest that hand-washing could prevent the spread of puerperal fever and related deaths. Ironically, after being ridiculed for his theory, he died in a mental asylum, due to an infection from a wound.
English physicist, and mathematician, James Prescott Joule primarily worked on the nature of heat, in course of which he established that all forms of energy are fundamentally same and therefore inter-convertible. His findings resulted in the development of the first law of thermodynamics and negation of calorie theory. The SI derived unit of energy, the joule, is named after him.
It is believed Russian novelist Ivan Turgenev was highly inspired by his dominant mother in his younger days and thus created strong female characters in his novels later. He is remembered for popularizing Russian literature and realism in the West. One of his most notable works was Father and Sons.
Lucy Stone was an American abolitionist, suffragist, orator, and women's rights activist. She was the first woman to earn a college degree from Massachusetts. Stone played a key role in the formation of the Woman's National Loyal League as well as the American Woman Suffrage Association. In 1986, she was made an inductee of the National Women's Hall of Fame.
Charles Gounod was a French composer. Prolific in his career, he wrote 12 operas and a large number of songs and church music pieces including his Ave Maria and Funeral March of a Marionette. During the Franco-Prussian War, he fled to England, disrupting his career. He later returned to France and regained his position as a respected musical figure.
Tewodros II of Ethiopia reigned as the Emperor of Ethiopia from 11 February 1855 until his demise on 13 April 1868. An important and influential ruler, Tewodros hold an important place in Ethiopian history. Many plays, books, songs, and art works have been influenced by the life of Tewodros II of Ethiopia.
Marius Petipa was a French pedagogue, ballet dancer, and choreographer. He is widely regarded as one of the most influential and important ballet choreographers and masters in ballet history. From 1871 to 1903, he served as the principal choreographer and Ballet Master of the popular Imperial Russian Ballet. In the 1983 biopic Anna Pavlova, Petipa was played by Pyotr Gusev.
American abolitionist Elizabeth Van Lew is best-known for developing and running an extensive and efficient spy-ring for Union Army during American Civil War. She was the first person in Richmond who raised the US flag in the city after it fell to US forces in April 1865. She later served as Postmaster General of Richmond and modernized the city's postal-system.
Amelia Bloomer was an American temperance and women's rights advocate and newspaper editor. She is best remembered for her association with The Lily and became the first American woman to own and edit a newspaper for women. The famous bloomer costume, which is known as the reform dress, is named after Amelia Bloomer.
Alexander Bain was a Scottish philosopher. He was a prominent educationalist in the British school of empiricism. A respected figure in the fields of psychology, logic, linguistics, moral philosophy, and education reform, he founded Mind, the first-ever journal of psychology and analytical philosophy. He had an illustrious academic career at the University of Aberdeen.
A pioneer in astronomical spectroscopy, Italian Jesuit priest and astronomer Angelo Secchi was among the first scientists who authoritatively stated that the Sun is a star. Notable contributions of Secchi, who served as director of the observatory at the Roman College for nearly three decades, includes discovering three comets and solar spicules; and inventing Secchi disk, heliospectrograph and telespectroscope.
Emil Heinrich Du Bois-Reymond was a German physiologist and physician. He is credited with developing experimental electrophysiology and co-discovering nerve action potential. He was also a renowned teacher and is known for his association with the University of Berlin where he served as a professor.
Finnish writer, poet, historian, and journalist Zachris Topelius is best remembered for writing Finnish historical novels in Swedish language, which were later translated into Finnish. His notable works include the fairy tales The Tomten in Åbo Castle and Sampo Lappelill., and the poem Sov du lilla videung. Topelius served as professor and later as rector of the University of Helsinki.
Frans Cornelis Donders was a Dutch ophthalmologist who also served as a professor of physiology at Utrecht University. A respected and internationally acclaimed ophthalmologist, Donders directed the Netherlands Hospital for Eye Patients for many years. Frans Cornelis Donders was also one of the three main founders of scientific ophthalmology along with Hermann Ludwig Ferdinand von Helmholtz and Graefe.
Born to a French diplomat, Henri Étienne Sainte-Claire Deville initially studied medicine but later deviated to chemistry. He taught chemistry at the Sorbonne and also found a way to produce large-scale metallic aluminium economically through what was known as the Deville process. He also worked extensively on platinum.
Ernest II, the eldest son of Duke Ernest I, had been the duke of Saxe-Coburg-Gotha. He was quite close to his brother, Prince Albert, consort to England’s Queen Victoria. Best known for his support of the German unification, he was also a skilled composer of operas and an avid sports lover.
František Ladislav Rieger was a Czech publicist and politician best remembered for his role as the leader of the early-Czech nationalist movement. He is also remembered for his immense contribution to the Czech economic literature as well as the cultural heritage. A much-revered politician, František Ladislav Rieger also made important contributions to the development of the National Party.
Christian IX of Denmark was King of Denmark from 1863 to 1906, having claimed the throne following the death of King Frederick VII. During his early reign, the Danish saw defeat in the Second Schleswig War and lost several duchies. Recovering from a tumultuous start, he reigned over his nation for several years and was respected by his people.
David Lewis Macpherson was a Scottish-born Canadian political figure and businessman. From 1867 to 1896, he was one of the members of the Senate of Canada. Also known for his reputation as a railway builder, Macpherson helped establish the Toronto Rolling Mills Company after moving to Toronto in 1853. In 1884, David Macpherson was knighted for his achievements and contributions.
Giovanni Strazza is perhaps best known for his unique artwork The Veiled Virgin, a stunning and realistic depiction of the Virgin Mary, with a veil draped over her, made of high-quality Carrara marble, derived from Tuscany. The Italian sculptor taught at his alma, Brera Academy in Milan.

