Philosophically, dialectical materialism — that Man originates History through active consciousness — was originated by Moses Hess, and developed by Karl Marx and Friedrich Engels.

As a philosopher, Dietzgen had constructed the theory of dialectical materialism independently of Marx and Friedrich Engels.

" -- Friedrich Engels, Dialectics of Nature.

Lenin was developing the work of Friedrich Engels, who said that " with each epoch-making discovery, even in the sphere of natural science, materialism has to change its form.

* Friedrich Engels

* Ludwig Feuerbach and the End of Classical German Philosophy, Friedrich Engels

* Anti-Dühring, Friedrich Engels

* Dialectics of Nature, Friedrich Engels

* 1848 – Karl Marx and Friedrich Engels publish The Communist Manifesto.

It was not unusual for men and women in Victorian society to have affairs ; Charles Bray, John Chapman, Friedrich Engels, and Wilkie Collins all had affairs, though more discreetly than Lewes and Evans.

However, their efforts were unable to stop the spread of revolutionary movements: the middle classes had been deeply influenced by the ideals of the French revolution, the Industrial Revolution brought important economical and social changes, the lower classes started to be influenced by socialist, communist and anarchistic ideas ( especially those summarised by Karl Marx and Friedrich Engels in The Communist Manifesto ), and the preference of the new capitalists became Liberalism.

Friedrich Engels wrote: " I use ' historical materialism ' to designate the view of the course of history, which seeks the ultimate causes and the great moving power of all important historic events in the economic development of society, in the changes in the modes of production and exchange, with the consequent division of society into distinct classes and the struggles of these classes.

The first explicit and systematic summary of the materialist interpretation of history published, Anti-Dühring, was written by Friedrich Engels.

In 1880, about three years before Marx died, Friedrich Engels indicated that he accepted the usage of the term " historical materialism ".

In the early years of the 20th century, historical materialism was often treated by socialist writers as interchangeable with dialectical materialism, a formulation never used by Friedrich Engels however.

Friedrich Engels in The Condition of the Working Class in England in 1844 spoke of " an industrial revolution, a revolution which at the same time changed the whole of civil society ".

A description of housing of the mill workers in England in 1844 was given by Friedrich Engels, a co-founder of Marxism.

A vivid description of living standards of the mill workers in England in 1844 was given by Friedrich Engels.

Portrait by Friedrich Engels. Johann Kaspar Schmidt ( October 25, 1806 – June 26, 1856 ), better known as Max Stirner ( the nom de plume he adopted from a schoolyard nickname he had acquired as a child because of his high brow, in German ' Stirn '), was a German philosopher, who ranks as one of the literary fathers of nihilism, existentialism, post-modernism and anarchism, especially of individualist anarchism.

Caricature of Max Stirner taken from a sketch by Friedrich Engels.

He published various books during his lifetime, with the most notable being The Communist Manifesto ( 1848 ) and Capital ( 1867 – 1894 ); some of his works were co-written with his friend and fellow German revolutionary socialist, Friedrich Engels.

It was in Paris that, on 28 August 1844, Marx met German socialist Friedrich Engels at the Café de la Régence after becoming interested in the ideas that the latter had expressed in articles written for the Rheinische Zeitung and the Deutsch-Französische Jahrbücher.

Designed to put forward news from across Europe with his own Marxist interpretation of events, Marx remained one of its primary writers, accompanied by other fellow members of the Communist League who wrote for the paper, although despite their input it remained, according to Friedrich Engels, " a simple dictatorship by Marx ", who dominated the choice of content.

Several of his closest friends spoke at his funeral, including Wilhelm Liebknecht and Friedrich Engels.

Non-relatives attending the funeral included three communist associates of Marx: Friedrich Lessner, imprisoned for three years after the Cologne communist trial of 1852 ; G. Lochner, whom Engels described as " an old member of the Communist League "; and Carl Schorlemmer, a professor of chemistry in Manchester, a member of the Royal Society, and a communist activist involved in the 1848 Baden revolution.

Telefunken Volkstrautonium, 1933 ( Telefunken Trautonium Ela T 42 ( 1933-1935 )) a product version of trautonium co-developed by Telefunken, Friedrich Trautwein and Oskar Sala since 1931.

Benzene, C < sub > 6 </ sub > H < sub > 6 </ sub >, is the simplest aromatic hydrocarbon and was recognized as the first aromatic hydrocarbon, with the nature of its bonding first being recognized by Friedrich August Kekulé von Stradonitz in the 19th century.

He had become passionate about the study of chemistry, matriculating at the University of Göttingen in the spring of 1838 in order to study with the famous chemist Friedrich Wöhler.

His last opera was a German language singspiel Die Neger, ( The Negroes ), a melodrama set in colonial Virginia with a text by Georg Friedrich Treitschke ( the author of the libretto for Beethoven's Fidelio ) performed in 1804 and was a complete failure.

In 1872, the firm was taken over by Friedrich Schreiber, and in 1876 it merged with the firm of August Cranz, who bought the company in 1879 and ran it under his name.

" They approached a notable Lutheran pastor, Friedrich Rittelmeyer, who was already working with Steiner's ideas, to join their efforts.

The Arrhenius definition of acid – base reactions is a development of the hydrogen theory of acids, devised by Svante Arrhenius, which was used to provide a modern definition of acids and bases that followed from his work with Friedrich Wilhelm Ostwald in establishing the presence of ions in aqueous solution in 1884, and led to Arrhenius receiving the Nobel Prize in Chemistry in 1903 for " recognition of the extraordinary services ... rendered to the advancement of chemistry by his electrolytic theory of dissociation ".

They were taken from the " Ode to Joy ", a poem written by Friedrich Schiller in 1785 and revised in 1803, with additions made by the composer.

Although not formalised and acknowledged as a mythos per se, Lovecraft did correspond with contemporary writers ( Clark Ashton Smith, Robert E. Howard, Robert Bloch, Frank Belknap Long, Henry Kuttner, and Fritz Lieber – a group referred to as the " Lovecraft Circle ") – and shared story elements: Robert E. Howard's character Friedrich Von Junzt reads Lovecraft's Necronomicon in the short story " The Children of the Night " ( 1931 ), and in turn Lovecraft mentions Howard's Unaussprechlichen Kulten in the stories " Out of the Aeons " ( 1935 ) and " The Shadow Out of Time " ( 1936 ).

The Weimar Republic under Friedrich Ebert violently suppressed workers ' uprisings with the help of Gustav Noske and Reichswehr General Groener, and tolerated the paramilitary Freikorps forming all across Germany.

Even provisional President Friedrich Ebert contributed to the myth when he saluted returning veterans with the oration that " no enemy has vanquished you " ( kein Feind hat euch überwunden!

Euripides's reputation was to take a beating early in the nineteenth century when Friedrich Schlegel and his brother August Wilhelm Schlegel championed Aristotle's ' biological ' model of theatre history, identifying Euripides with the moral, political and artistic degeneration of Athens.

Gathering on Sanssouci in the Marble Hall, with Voltaire, Casanova, d ' Argens, La Mettrie, James Francis Edward Keith | James Keith, George Keith, 10th Earl Marischal | George Keith, Friedrich Rudolf von Rothenburg, Christoph Ludwig von Stille, Karl Ludwig von Pöllnitz and Algarotti.

Seven hundred is precisely the number of people which Kaiser Friedrich III brought with him when he entered Rome in 1468, to show the Pope who the most powerful man in the world was ".

Informal discussions with colleagues and friends stimulated a greater interest, which was reinforced by Friedrich Hayek's powerful book The Road to Serfdom, by my attendance at the first meeting of the Mont Pelerin Society in 1947, and by discussions with Hayek after he joined the university faculty in 1950.

* UCLA Oral History 1983 Interviews with Friedrich Hayek, transcript

* Booknotes interview with Alan Ebenstein on Friedrich Hayek: A Biography, July 8, 2001.

There, he received a liberal education at the Lyceum, and Karl J. Windischmann drew his attention to the languages and literature of the East ( Windischmann, along with Georg Friedrich Creuzer, Johann Joseph von Görres, and the brothers Schlegel, expressed great enthusiasm for Indian wisdom and philosophy ).

Franz Anton Mesmer ( May 23, 1734 – March 5, 1815 ) sometimes incorrectly referred to as Friedrich Anton Mesmer, was a German physician with an interest in astronomy, who theorised that there was a natural energetic transference that occurred between all animated and inanimate objects that he called magnétisme animal ( animal magnetism ) and other spiritual forces often grouped together as mesmerism.

Archimedes ( 287-212 BC ), of Syracuse, Sicily, when it was a Greek city-state, is often considered to be the greatest of the Greek mathematicians, and occasionally even named as one of the three greatest of all time ( along with Isaac Newton and Carl Friedrich Gauss ).

This school is associated with the names of Novalis, August Wilhelm Schlegel, Friedrich Schlegel and Nietzsche.

He also wrote an opera based on the Friedrich de la Motte Fouqué's gothic story Undine, with de la Motte Fouqué himself writing the libretto.

The method is based on the individual work of Carl Friedrich Gauss ( 1777 – 1855 ) and Adrien-Marie Legendre ( 1752 – 1833 ) combined with modern algorithms for multiplication and square roots.

By the 1830s mathematics, physics, chemistry, and biology had emerged with world class science, led by Alexander von Humboldt ( 1769 – 1859 ) in natural science and Carl Friedrich Gauss ( 1777 – 1855 ) in mathematics.