Leibniz: Logic The revolutionary ideas of Gottfried Wilhelm Leibniz (1646-1716) on logic were developed by him between 1670 and 1690. The ideas can be divided into four areas: the Syllogism, the Universal Calculus, Propositional Logic, and Modal Logic. These revolutionary ideas remained hidden in the Archive of the Royal Library in Hanover until 1903 when the French mathematician Louis Couturat published the Opuscules et fragments inédits de Leibniz.

Neo-Stoicism Neo-Stoicism (or Neostoicism) is the name given to a late Renaissance philosophical movement that attempted to revive ancient Stoicism in a form that would be acceptable to a Christian audience. This involved the rejection or modification of certain parts of the Stoic system, especially physical doctrines such as materialism and determinism. As John Calvin’s objection attests, this was often seen by others to be

Paulo Freire (1921—1997) By Slobodan Dimitrov – own work CC BY-SA 3.0 Paulo Freire was one of the most influential philosophers of education of the twentieth century. He worked wholeheartedly to help people both through his philosophy and his practice of critical pedagogy. A native of Brazil, Freire’s goal was to eradicate illiteracy among people from previously colonized countries and continents. His insights were rooted

Lucian Blaga (1895—1961) Lucian Blaga was a prominent philosopher in Eastern Europe during the period between the two world wars. Trained in both Eastern Orthodox theology and classical philosophy, he developed a “speculative” philosophy that includes books on epistemology, metaphysics, aesthetics, philosophy of culture, philosophical anthropology, philosophy of history, philosophy of science, and philosophy of religion. A chair in philosophy of culture was created for

Frantz Fanon (1925—1961) Frantz Fanon was one of a few extraordinary thinkers supporting the decolonization struggles occurring after World War II, and he remains among the most widely read and influential of these voices. His brief life was notable both for his whole-hearted engagement in the independence struggle the Algerian people waged against France and for his astute, passionate analyses of the human impulse towards

Jean Paul Sartre: Existentialism The philosophical career of Jean Paul Sartre (1905-1980) focuses, in its first phase, upon the construction of a philosophy of existence known as existentialism. Sartre’s early works are characterized by a development of classic phenomenology, but his reflection diverges from Husserl’s on methodology, the conception of the self, and an interest in ethics. These points of divergence are the cornerstones of