Henri Bergson in the context of "Humorist"

Gilles Louis René Deleuze (18 January 1925 – 4 November 1995) was a French philosopher who, from the early 1950s until his death in 1995, wrote on philosophy, literature, film, and fine art. His most popular works were the two volumes of Capitalism and Schizophrenia: Anti-Oedipus (1972) and A Thousand Plateaus (1980), both co-written with psychoanalyst Félix Guattari. His metaphysical treatise Difference and Repetition (1968) is considered to be his magnum opus.

An important part of Deleuze's oeuvre is devoted to the reading of other philosophers: the Stoics, Leibniz, Hume, Kant, Nietzsche, Spinoza, and Bergson. A. W. Moore, citing Bernard Williams's criteria for a great thinker, ranks Deleuze among the "greatest philosophers". Although he once characterized himself as a "pure metaphysician", his work has influenced a variety of disciplines across the humanities, including philosophy, art, and literary theory, as well as movements such as post-structuralism and postmodernism.

Orthogenesis, also known as orthogenetic evolution, progressive evolution, evolutionary progress, or progressionism, is an obsolete biological hypothesis that organisms have an innate tendency to evolve in a definite direction towards some goal (teleology) due to some internal mechanism or "driving force". According to the theory, the largest-scale trends in evolution have an absolute goal such as increasing biological complexity. Prominent historical figures who have championed some form of evolutionary progress include Jean-Baptiste Lamarck, Pierre Teilhard de Chardin, and Henri Bergson.

The term orthogenesis was introduced by Wilhelm Haacke in 1893 and popularized by Theodor Eimer five years later. Proponents of orthogenesis had rejected the theory of natural selection as the organizing mechanism in evolution for a rectilinear (straight-line) model of directed evolution. With the emergence of the modern synthesis, in which genetics was integrated with evolution, orthogenesis and other alternatives to Darwinism were largely abandoned by biologists, but the notion that evolution represents progress is still widely shared; modern supporters include E. O. Wilson and Simon Conway Morris. The evolutionary biologist Ernst Mayr made the term effectively taboo in the journal Nature in 1948, by stating that it implied "some supernatural force". The American paleontologist George Gaylord Simpson (1953) attacked orthogenesis, linking it with vitalism by describing it as "the mysterious inner force". Despite this, many museum displays and textbook illustrations continue to give the impression that evolution is directed.

Vitalism is an idea that living organisms are differentiated from the non-living by the presence of forces, properties or powers including those which may not be physical or chemical. Varied forms of vitalist theories were held in former times and they are now considered pseudoscientific concepts. Where vitalism explicitly invokes a vital principle, that element is often referred to as the "vital spark", "energy", "élan vital" (coined by vitalist Henri Bergson), "vital force", or "vis vitalis", which some equate with the soul. In the 18th and 19th centuries, vitalism was discussed among biologists, between those belonging to the mechanistic school who felt that the known mechanics of physics would eventually explain the difference between life and non-life and vitalists who argued that the processes of life could not be reduced to a mechanistic process. Vitalist biologists such as Johannes Reinke proposed testable hypotheses meant to show inadequacies with mechanistic explanations, but their experiments failed to provide support for vitalism. Biologists now consider vitalism in this sense to have been refuted by empirical evidence, and hence regard it either as a superseded scientific theory, or as a pseudoscience since the mid-20th century.

Vitalism has a long history in medical philosophies: many traditional healing practices posited that disease results from some imbalance in vital forces.

Lebensphilosophie (German: [ˈleːbm̩s.filozoˌfiː]; meaning "philosophy of life") was a dominant philosophical movement of German-speaking countries in the late 19th and early 20th centuries, which had developed out of German Romanticism. Lebensphilosophie emphasised the meaning, value and purpose of life as the foremost focus of philosophy.

Its central theme was that an understanding of life can only be apprehended by life itself, and from within itself. Drawing on the critiques of epistemology offered by Schopenhauer and Nietzsche, notable ideas of the movement have been seen as precursors to both Husserlian phenomenology and Heideggerian existential phenomenology.

Élan vital (French pronunciation: [elɑ̃ vital]) is a term coined by French philosopher Henri Bergson in his 1907 book Creative Evolution, in which he addresses the question of self-organisation and spontaneous morphogenesis of things in an increasingly complex manner. Élan vital was translated in the English edition as "vital impetus", but is usually translated by his detractors as "vital force". It is a hypothetical explanation for evolution and development of organisms, which Bergson linked closely with consciousness – the intuitive perception of experience and the flow of inner time.

Georges Eugène Sorel (/səˈrɛl/; French: [ʒɔʁʒ øʒɛn sɔʁɛl]; 2 November 1847 – 29 August 1922) was a French social thinker, political theorist, historian, and later journalist. He has inspired theories and movements grouped under the name of Sorelianism. His social and political philosophy owed much to his reading of Proudhon, Karl Marx, Giambattista Vico, Henri Bergson (whose lectures at the Collège de France he attended), and later William James. His notion of the power of myth in collective agency inspired socialists, anarchists, Marxists, and fascists. Together with his defense of violence, the power of myth is the contribution for which he is most often remembered.

Politically he evolved from his early liberal-conservative positions towards Marxism, social-democracy, and eventually syndicalism. Between 1909 and 1910 he was marginally involved with Charles Maurras' Action Française, and between 1911 and 1913 he wrote for the politically transversal L'Indépendance, established together with Édouard Berth – one of Sorel's main disciples – and Georges Valois, closer to Maurrassian circles. After a long silence during the war, Sorel came out in favour of Lenin and moved towards Bolshevist positions until his death in 1922.

The International Committee on Intellectual Cooperation, sometimes League of Nations Committee on Intellectual Cooperation, was an advisory organisation for the League of Nations which promoted international exchange between scientists, researchers, teachers, artists and intellectuals. Established in 1922, it counted such figures as Henri Bergson, Albert Einstein, Sarvepalli Radhakrishnan, Jagadish Chandra Bose, Nitobe Inazo, Marie Curie, Gonzague de Reynold, Leonardo Torres Quevedo, and Robert A. Millikan among its members.

Open society (French: société ouverte) is a term coined by French philosopher Henri Bergson in 1932, and describes a dynamic system inclined to moral universalism. Bergson contrasted an open society with what he called a closed society, a closed system of law, morality or religion. Bergson suggests that if all traces of civilization were to disappear, the instincts of the closed society for including or excluding others would remain.

The idea of an open society was further developed during World War II by the Austrian-born Jewish philosopher Karl Popper. Popper saw it as part of a historical continuum reaching from the organic, tribal, or closed society, through the open society (marked by a critical attitude to tradition) to the abstract or depersonalized society lacking all face-to-face interaction transactions.

Pierre Teilhard de Chardin, S.J., (French: [pjɛʁ tɛjaʁ də ʃaʁdɛ̃] ; 1 May 1881 – 10 April 1955) was a French Jesuit, Catholic priest, scientist, paleontologist, philosopher, mystic, and teacher. Teilhard de Chardin investigated the theory of evolution from a perspective influenced by Henri Bergson and Christian mysticism, writing multiple scientific and religious works on the subject. His mainstream scientific achievements include his palaeontological research in China, taking part in the discovery of the significant Peking Man fossils from the Zhoukoudian cave complex near Beijing. His more speculative ideas, sometimes criticized as pseudoscientific, have included a vitalist conception of the Omega Point. Along with Vladimir Vernadsky, he contributed to the development of the concept of the noosphere.

In 1962, the Holy Office issued a warning regarding Teilhard's works, alleging ambiguities and doctrinal errors without specifying them. Some eminent Catholic figures, including Pope Benedict XVI and Pope Francis, have made positive comments on some of his ideas since. The response to his writings by scientists has been divided.

The Lycée Condorcet (French: [lise kɔ̃dɔʁsɛ]) is a secondary school in Paris, France, located at 8, rue du Havre, in the city's 9th arrondissement. Founded in 1803, it is one of the four oldest high schools in Paris and also one of the most prestigious. Since its inception, various political eras have seen it given a number of different names, but its identity today honors the memory of the Marquis de Condorcet. Henri Bergson, Horace Finaly, Claude Lévi-Strauss, Marcel Proust, Jean-Luc Marion, Francis Poulenc and Paul Verlaine are some of the students who attended the Lycée Condorcet.

Some of the school's famous teachers include Jean Beaufret, Paul Bénichou, Jean-Marie Guyau, Jean-Paul Sartre, and Stéphane Mallarmé.

The 1950 Nobel Prize in Literature was awarded the British philosopher Bertrand Russell (1872–1970) "in recognition of his varied and significant writings in which he champions humanitarian ideals and freedom of thought." He is the third philosopher to become a recipient of the prize after the German philosopher Rudolf Christoph Eucken in 1908 and the French analytic-continental philosopher Henri Bergson in 1927, and the fifth British author to be awarded.

Creative Evolution (French: L'Évolution créatrice) is a 1907 book by French philosopher Henri Bergson. Its English translation appeared in 1911. The book proposed a version of orthogenesis in place of Darwin's mechanism of natural selection, suggesting that evolution is motivated by the élan vital, a "vital impetus" that can also be understood as humanity's natural creative impulse. The book was very popular in the early decades of the twentieth century.

The book also developed concepts of time (offered in Bergson's earlier work) which significantly influenced modernist writers and thinkers such as Marcel Proust and Thomas Mann. For example, Bergson's term "duration" refers to a more individual, subjective experience of time, as opposed to mathematical, objectively measurable "clock time." In Creative Evolution, Bergson suggests that the experience of time as "duration" can best be understood through intuition.

Giovanni Papini (9 January 1881 – 8 July 1956) was an Italian journalist, essayist, novelist, short story writer, poet, literary critic, and philosopher. A controversial literary figure of the early and mid-twentieth century, he was the earliest and most enthusiastic representative and promoter of Italian pragmatism. Papini was admired for his writing style and engaged in heated polemics. Involved with avant-garde movements such as futurism and post-decadentism, he moved from one political and philosophical position to another, always dissatisfied and uneasy: he converted from anti-clericalism and atheism to Catholicism, and went from convinced interventionism – before 1915 – to an aversion to war. In the 1930s, after moving from individualism to conservatism, he finally became a fascist, while maintaining an aversion to Nazism.

As one of the founders of the journals Leonardo (1903) and Lacerba (1913), he conceived literature as "action" and gave his writings an oratory and irreverent tone. Though self-educated, he was an influential iconoclastic editor and writer, with a leading role in Italian futurism and the early literary movements of youth. Working in Florence, he actively participated in foreign literary philosophical and political movements such as the French intuitionism of Bergson and the Anglo-American pragmatism of Peirce and James. Promoting the development of Italian culture and life with an individualistic and dreamy conception of life and art, he acted as a spokesman for Roman Catholic religious beliefs.

The principle of individuation, or principium individuationis, describes the manner in which a thing is identified as distinct from other things.

The concept appears in numerous fields and is encountered in works of Leibniz, Carl Jung, Gunther Anders, Gilbert Simondon, Bernard Stiegler, Friedrich Nietzsche, Arthur Schopenhauer, David Bohm, Henri Bergson, Gilles Deleuze, and Manuel DeLanda.