Personal : Religion/Spirituality : Philosopher/ Humanist

Louis Pierre Althusser (UK: , US: ; French: [altysɛʁ]; 16 October 1918 – 22 October 1990) was a French Marxist philosopher who studied at the École normale supérieure in Paris, where he eventually became Professor of Philosophy.
Althusser was a long-time member and sometimes a strong critic of the French Communist Party (Parti communiste français, PCF). His arguments and theses were set against the threats that he saw attacking the theoretical foundations of Marxism. These included both the influence of empiricism on Marxist theory, and humanist and reformist socialist orientations which manifested as divisions in the European communist parties, as well as the problem of the cult of personality and of ideology. Althusser is commonly referred to as a structural Marxist, although his relationship to other schools of French structuralism is not a simple affiliation and he was critical of many aspects of structuralism. He later described himself as a social anarchist.Althusser's life was marked by periods of intense mental illness. In 1980, he killed his wife, the sociologist Hélène Rytmann, by strangling her. He was declared unfit to stand trial due to insanity and committed to a psychiatric hospital for three years. He did little further academic work, dying in 1990.

Octave Pirmez (1832 – May 1883) was a Belgian author born in Châtelineau.

Christoph von Sigwart (28 March 1830 – 4 August 1904) was a German philosopher and logician. He was the son of philosopher Heinrich Christoph Wilhelm Sigwart (31 August 1789 – 16 November 1844).

Heinrich Friedrich Ernst Blücher (29 January 1899 – 31 October 1970) was a German poet and philosopher. He was the second husband of Hannah Arendt whom he had first met in Paris in 1936. During his life in America, Blücher traveled in popular academic circles and appears prominently in the lives of various New York intellectuals.

Erich Unger (1887-1950) was a Jewish philosopher of standing who published many articles and a number of books, many of them in his native tongue, German. His writings cover a wide range of topics: poetry, Nietzsche, political theory, general philosophy and Jewish philosophy.

Kurt Max Julius Sternberg (19 June 1885 – 21 September 1942) was a Neo-Kantian German philosopher, author, and Holocaust victim.

Kurt Grelling (2 March 1886 – September 1942) was a German logician and philosopher, member of the Berlin Circle.

Friedrich Albert Moritz Schlick (; German: [ʃlɪk] ; 14 April 1882 – 22 June 1936) was a German philosopher, physicist, and the founding father of logical positivism and the Vienna Circle.