Ernst Moses Marcus (3 September 3, 1856, Kamen – 30 October, 1928

Essen Essen (; Latin: ''Assindia'') is the central and, after Dortmund, second-largest city of the Ruhr, the largest urban area in Germany. Its population of makes it the fourth-largest city of North Rhine-Westphalia after Cologne, Düsseldorf and ...

) was a German

lawyer A lawyer is a person who practices law. The role of a lawyer varies greatly across different legal jurisdictions. A lawyer can be classified as an advocate, attorney, barrister, canon lawyer, civil law notary, counsel, counselor, solici ...

and philosopher. He developed a theory of

aether Aether, æther or ether may refer to: Metaphysics and mythology * Aether (classical element), the material supposed to fill the region of the universe above the terrestrial sphere * Aether (mythology), the personification of the "upper sky", sp ...

based on

Immanuel Kant Immanuel Kant (, , ; 22 April 1724 – 12 February 1804) was a German philosopher and one of the central Enlightenment thinkers. Born in Königsberg, Kant's comprehensive and systematic works in epistemology, metaphysics, ethics, and aes ...

's posthumous work ''

Opus Postumum ''Opus Postumum'' was the last work by the German philosopher Immanuel Kant, who died in 1804. Although efforts to publish the manuscript were made in 1882, it was not until 1936–1938 that a German edition of the whole manuscript appeared. His ...

'', however sharply disagreeing with Erich Adickes interpretation. He used this to mount a criticism of

Albert Einstein Albert Einstein ( ; ; 14 March 1879 – 18 April 1955) was a German-born theoretical physicist, widely acknowledged to be one of the greatest and most influential physicists of all time. Einstein is best known for developing the theor ...

's theory of relativity. He was a major influence on Salomo Friedlaender. Ernst was the son of Robert Ruben Marcus and Berta Marcus. Marcus studied law in

Bonn The federal city of Bonn ( lat, Bonna) is a city on the banks of the Rhine in the German state of North Rhine-Westphalia, with a population of over 300,000. About south-southeast of Cologne, Bonn is in the southernmost part of the Rhine-Ru ...

and

Berlin Berlin is Capital of Germany, the capital and largest city of Germany, both by area and List of cities in Germany by population, by population. Its more than 3.85 million inhabitants make it the European Union's List of cities in the European U ...

. Whilst working as an

Assessor An assessor may be: * ''Assessor'' (fish), a genus of fishes * Assessor (law), the assistant to a judge or magistrate * Assessor (Oxford), a senior officer of the University of Oxford * Assessor (property), an expert who calculates the value of pr ...

in 1889 he developed an interest in philosophy. In 1890 he was appointed as a judge in

. In 1893 he married Berta Auerbach with whom he had three children. In 1899 he started regular meetings with Salomo Friedlaender who admired his theses and became a firm supporter of him. Friedlaender referred to him by epithet the " Krupp of logic".

Works

* ''Kants Revolutionsprinzip'' (1902) * ''Das Erkenntnisproblem'' (1905) * ''Die Beweisfuehrung in der Kritik der reinen Vernunft'' (1914) * ''Kants Weltgebaeude'' (1917) * ''Das Problem der Excentrischen Empfindung und seine Losung'' (1918) Berlin: Verlag der Sturm *
Theorie einer natuerlichen Magie: Gegründet auf Kants Weltlehre
' (1924) Munich: Ernst Reinhardt. * ''Kritik des Aufbaus der speziellen Relativitaetstheorie'' (1926) * ''Die Zeit und Raumlehre Kants'' (1927) His papers are held by the Leo Baeck Institute, New York.

References

{{DEFAULTSORT:Marcus, Ernst 1856 births 1928 deaths