The Most Influential People Across History
Find the most influential people in 24 academic disciplines and numerous subdisciplines
Find famous and important people related to your research. This is an excellent tool for research papers, topic papers, and building a bibliography. Using our influence-based algorithm, our rankings synthesize data from Wikipedia, Wikidata, Semantic Scholar, and CrossRef.
Students and researchers now have a fast and reliable way to find influential thinkers from 24 disciplines and 300 sub-disciplines (and growing). If you want to find history’s most influential philsosophers, or the world’s most influential mathematicians currently, now you can.
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List of the most influential people in Philosophy,
#1
Aristotle
384 BC - 322 BC (62 years)
Aristotle was an Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology and the arts. As the founder of the Peripatetic school of philosophy in the Lyceum in Athens, he began the wider Aristotelian tradition that followed, which set the groundwork for the development of modern science.
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Plato
427 BC - 347 BC (80 years)
Plato was an ancient Greek philosopher born in Athens during the Classical period. In Athens, Plato founded the Academy, a philosophical school where he taught the philosophical doctrines that would later become known as Platonism. Plato, or Platon, was a pen name derived, apparently, from the nickname given to him by his wrestling coachallegedly a reference to his physical girth. According to Alexander Polyhistor, quoted by Diogenes Laërtius, his actual name was Aristocles, son of Ariston, of the deme Collytus, in Athens.
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Immanuel Kant
1724 - 1804 (80 years)
Immanuel Kant 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 aesthetics have made him one of the most influential and controversial figures in modern Western philosophy.
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Bertrand Russell
1872 - 1970 (98 years)
Bertrand Arthur William Russell, 3rd Earl Russell, was a British mathematician, philosopher, logician, and public intellectual. He had a considerable influence on mathematics, logic, set theory, linguistics, artificial intelligence, cognitive science, computer science, and various areas of analytic philosophy, especially philosophy of mathematics, philosophy of language, epistemology, and metaphysics.
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Karl Marx
1818 - 1883 (65 years)
Karl Marx was a German-born philosopher, economist, political theorist, historian, sociologist, journalist, and revolutionary socialist. His best-known works are the 1848 pamphlet The Communist Manifesto and the three-volume ; the latter employs his critical approach of historical materialism in an analysis of capitalism and represents his greatest intellectual achievement. Marx's ideas and theories and their subsequent development, collectively known as Marxism, have exerted enormous influence on modern intellectual, economic and political history.
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Socrates
469 BC - 399 BC (70 years)
Socrates was a Greek philosopher from Athens who is credited as the founder of Western philosophy and among the first moral philosophers of the ethical tradition of thought. An enigmatic figure, Socrates authored no texts and is known mainly through the posthumous accounts of classical writers, particularly his students Plato and Xenophon. These accounts are written as dialogues, in which Socrates and his interlocutors examine a subject in the style of question and answer; they gave rise to the Socratic dialogue literary genre. Contradictory accounts of Socrates make a reconstruction of his philosophy nearly impossible, a situation known as the Socratic problem.
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Thomas Aquinas
1225 - 1274 (49 years)
Thomas Aquinas was an Italian Dominican friar and priest, an influential philosopher and theologian, and a jurist in the tradition of scholasticism from the county of Aquino in the Kingdom of Sicily.
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Georg Wilhelm Friedrich Hegel
1770 - 1831 (61 years)
Georg Wilhelm Friedrich Hegel was a German philosopher and one of the most influential figures of German idealism and 19th-century philosophy. His influence extends across the entire range of contemporary philosophical topics, from metaphysical issues in epistemology and ontology, to political philosophy, the philosophy of history, philosophy of art, philosophy of religion, and the history of philosophy.
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Martin Heidegger
1889 - 1976 (87 years)
Martin Heidegger was a German philosopher who is best known for contributions to phenomenology, hermeneutics, and existentialism. He is often considered to be among the most important and influential philosophers of the 20th century.
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Friedrich Nietzsche
1844 - 1900 (56 years)
Friedrich Wilhelm Nietzsche was a German philosopher. He began his career as a classical philologist before turning to philosophy. He became the youngest person to hold the Chair of Classical Philology at the University of Basel in 1869 at the age of 24, but resigned in 1879 due to health problems that plagued him most of his life; he completed much of his core writing in the following decade. In 1889, at age 44, he suffered a collapse and afterward a complete loss of his mental faculties, with paralysis and probably vascular dementia. He lived his remaining years in the care of his mother until her death in 1897 and then with his sister Elisabeth Förster-Nietzsche.
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René Descartes
1596 - 1650 (54 years)
René Descartes was a French philosopher, scientist, and mathematician, widely considered a seminal figure in the emergence of modern philosophy and science. Mathematics was central to his method of inquiry, and he connected the previously separate fields of geometry and algebra into analytic geometry. Descartes spent much of his working life in the Dutch Republic, initially serving the Dutch States Army, later becoming a central intellectual of the Dutch Golden Age. Although he served a Protestant state and was later counted as a Deist by critics, Descartes was Roman Catholic.
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John Locke
1632 - 1704 (72 years)
John Locke was an English philosopher and physician, widely regarded as one of the most influential of Enlightenment thinkers and commonly known as the "father of liberalism". Considered one of the first of the British empiricists, following the tradition of Francis Bacon, Locke is equally important to social contract theory. His work greatly affected the development of epistemology and political philosophy. His writings influenced Voltaire and Jean-Jacques Rousseau, and many Scottish Enlightenment thinkers, as well as the American Revolutionaries. His contributions to classical republicanism and liberal theory are reflected in the United States Declaration of Independence.
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Karl Popper
#2
Overall Influence
1902 - 1994 (92 years)
Sir Karl Raimund Popper was an Austrian–British philosopher, academic and social commentator. One of the 20th century's most influential philosophers of science, Popper is known for his rejection of the classical inductivist views on the scientific method in favour of empirical falsification. According to Popper, a theory in the empirical sciences can never be proven, but it can be falsified, meaning that it can be scrutinised with decisive experiments. Popper was opposed to the classical justificationist account of knowledge, which he replaced with critical rationalism, namely "the first n...
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Ludwig Wittgenstein
1889 - 1951 (62 years)
Ludwig Josef Johann Wittgenstein was an Austrian philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language. From 1929 to 1947, Wittgenstein taught at the University of Cambridge. In spite of his position, during his entire life only one book of his philosophy was published, the 75-page Logisch-Philosophische Abhandlung , which appeared, together with an English translation, in 1922 under the Latin title Tractatus Logico-Philosophicus. His only other published works were an article, "Some Remarks on Logical Form" ; a book review; and a children's dictionary.
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Baruch Spinoza
1632 - 1677 (45 years)
Baruch Spinoza was a philosopher of Portuguese-Jewish origin, born in Amsterdam, the Dutch Republic, and mostly known under his Latinized pen name Benedictus de Spinoza. One of the foremost and seminal thinkers of the Enlightenment, modern biblical criticism, and 17th-century Rationalism, including modern conceptions of the self and the universe, he came to be considered "one of the most important philosophers—and certainly the most radical—of the early modern period". He was influenced by Stoicism, Maimonides, Machiavelli, Descartes, Hobbes, and a variety of heterodox Christian thinkers of his day.
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Jürgen Habermas
#4
Overall Influence
1929 - Present (95 years)
Jürgen Habermas is a German philosopher mostly associated with the influential Frankurt School in Germany, part of the Institute for Social Research, at Goethe University Frankfurt, and historically an important center for research on social theory and critical philosophy. Habermas, now 90, earned his Ph.D. in Philosophy from the University of Bonn in 1954. Habermas is a famed philosopher who has taught a number of influential philosophers, including Hans Joas at the University of Chicago. Habermas is known for his work on communicative rationality, a position that place emphasis on rational...
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Jacques Derrida
#3
Overall Influence
1930 - 2004 (74 years)
Jacques Derrida was an Algerian-born French philosopher. He developed the philosophy of deconstruction, which he utilized in a number of his texts, and which was developed through close readings of the linguistics of Ferdinand de Saussure and Husserlian and Heideggerian phenomenology. He is one of the major figures associated with post-structuralism and postmodern philosophy although he distanced himself from post-structuralism and disowned the word "postmodernity".
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Thomas Hobbes
1588 - 1679 (91 years)
Thomas Hobbes was an English philosopher. Hobbes is best known for his 1651 book Leviathan, in which he expounds an influential formulation of social contract theory. In addition to political philosophy, Hobbes contributed to a diverse array of other fields, including history, jurisprudence, geometry, theology, and ethics, as well as philosophy in general. He is considered to be one of the founders of modern political philosophy.
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Gottlob Frege
1848 - 1925 (77 years)
Friedrich Ludwig Gottlob Frege was a German philosopher, logician, and mathematician. He was a mathematics professor at the University of Jena, and is understood by many to be the father of analytic philosophy, concentrating on the philosophy of language, logic, and mathematics. Though he was largely ignored during his lifetime, Giuseppe Peano , Bertrand Russell , and, to some extent, Ludwig Wittgenstein introduced his work to later generations of philosophers. Frege is widely considered to be the greatest logician since Aristotle, and one of the most profound philosophers of mathematics ev...
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Friedrich Engels
1820 - 1895 (75 years)
Friedrich Engels was a German philosopher, political theorist, historian, journalist, and revolutionary socialist. He was also a businessman and Karl Marx's closest friend and collaborator. Engels's family was wealthy and owned large cotton-textile mills in Prussia and England. He met Marx in 1844, and they jointly authored a number of works, including The Holy Family , The German Ideology , and The Communist Manifesto , and worked as political organizers and activists in the Communist League and First International. Engels also helped Marx financially, allowing him to continue his writing after moving to London in 1849.
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Charles Sanders Peirce
1839 - 1914 (75 years)
Charles Sanders Peirce was an American scientist, mathematician, logician, and philosopher who is sometimes known as "the father of pragmatism". According to philosopher Paul Weiss, Peirce was "the most original and versatile of America's philosophers and America's greatest logician". Bertrand Russell wrote "he was one of the most original minds of the later nineteenth century and certainly the greatest American thinker ever".
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Willard Van Orman Quine
#18
Overall Influence
1908 - 2000 (92 years)
Willard Van Orman Quine was an American philosopher and logician in the analytic tradition, recognized as "one of the most influential philosophers of the twentieth century". He served as the Edgar Pierce Chair of Philosophy at Harvard University from 1956 to 1978.
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Søren Kierkegaard
1813 - 1855 (42 years)
Søren Aabye Kierkegaard was a Danish theologian, philosopher, poet, social critic, and religious author who is widely considered to be the first existentialist philosopher. He wrote critical texts on organized religion, Christianity, morality, ethics, psychology, and the philosophy of religion, displaying a fondness for metaphor, irony, and parables. Much of his philosophical work deals with the issues of how one lives as a "single individual," giving priority to concrete human reality over abstract thinking and highlighting the importance of personal choice and commitment. He was against lit...
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John Dewey
1859 - 1952 (93 years)
John Dewey was an American philosopher, psychologist, and educational reformer. He was one of the most prominent American scholars in the first half of the twentieth century. The overriding theme of Dewey's works was his profound belief in democracy, be it in politics, education, or communication and journalism. As Dewey himself stated in 1888, while still at the University of Michigan, "Democracy and the one, ultimate, ethical ideal of humanity are to my mind synonymous." Dewey considered two fundamental elements—schools and civil society—to be major topics needing attention and reconstruction to encourage experimental intelligence and plurality.
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Rudolf Carnap
1891 - 1970 (79 years)
Rudolf Carnap was a German-language philosopher who was active in Europe before 1935 and in the United States thereafter. He was a major member of the Vienna Circle and an advocate of logical positivism. He is considered "one of the giants among twentieth-century philosophers."
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Edmund Husserl
1859 - 1938 (79 years)
Edmund Gustav Albrecht Husserl was an Austrian-German philosopher and mathematician who established the school of phenomenology. In his early work, he elaborated critiques of historicism and of psychologism in logic based on analyses of intentionality. In his mature work, he sought to develop a systematic foundational science based on the so-called phenomenological reduction. Arguing that transcendental consciousness sets the limits of all possible knowledge, Husserl redefined phenomenology as a transcendental-idealist philosophy. Husserl's thought profoundly influenced 20th-century philosoph...
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Arthur Schopenhauer
1788 - 1860 (72 years)
Arthur Schopenhauer was a German philosopher. He is best known for his 1818 work The World as Will and Representation , which characterizes the phenomenal world as the manifestation of a blind and irrational noumenal will. Building on the transcendental idealism of Immanuel Kant , Schopenhauer developed an atheistic metaphysical and ethical system that rejected the contemporaneous ideas of German idealism. He was among the first thinkers in Western philosophy to share and affirm significant tenets of Indian philosophy, such as asceticism, denial of the self, and the notion of the world-as-appearance.
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Peter Singer
#22
Overall Influence
1946 - Present (78 years)
#29
William James
1842 - 1910 (68 years)
William James was an American philosopher, psychologist, and the first educator to offer a psychology course in the United States. James is considered to be a leading thinker of the late 19th century, one of the most influential philosophers of the United States, and the "Father of American psychology."
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Augustine of Hippo
354 - 430 (76 years)
Augustine of Hippo , also known as Saint Augustine, was a theologian and philosopher of Berber origin and the bishop of Hippo Regius in Numidia, Roman North Africa. His writings influenced the development of Western philosophy and Western Christianity, and he is viewed as one of the most important Church Fathers of the Latin Church in the Patristic Period. His many important works include The City of God, On Christian Doctrine, and Confessions.
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Hilary Putnam
#20
Overall Influence
1926 - 2016 (90 years)
Hilary Whitehall Putnam was an American philosopher, mathematician, and computer scientist and figure in analytic philosophy in the second half of the 20th century. He contributed to the studies of philosophy of mind, philosophy of language, philosophy of mathematics, and philosophy of science. Outside philosophy, Putnam contributed to mathematics and computer science. Together with Martin Davis he developed the Davis–Putnam algorithm for the Boolean satisfiability problem and he helped demonstrate the unsolvability of Hilbert's tenth problem.
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Plotinus
203 - 270 (67 years)
Plotinus was a Greek Platonist philosopher, born and raised in Roman Egypt. Plotinus is regarded by modern scholarship as the founder of Neoplatonism. His teacher was the self-taught philosopher Ammonius Saccas, who belonged to the Platonic tradition. Historians of the 19th century invented the term "neoplatonism" and applied it to refer to Plotinus and his philosophy, which was vastly influential during late antiquity, the Middle Ages, and the Renaissance. Much of the biographical information about Plotinus comes from Porphyry's preface to his edition of Plotinus' most notable literary work, The Enneads.
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Heraclitus
535 BC - 470 BC (65 years)
Heraclitus was an ancient Greek pre-Socratic philosopher from the city of Ephesus, which was then part of the Persian Empire. Little is known of Heraclitus's life. He wrote a single work, only fragments of which have survived. Most of the ancient stories about him are thought to be later fabrications based on interpretations of the preserved fragments. His paradoxical philosophy and appreciation for wordplay and cryptic, oracular epigrams has earned him the epithets "the dark" and "the obscure" since antiquity. He was considered arrogant and depressed, a misanthrope who was subject to melancholia.
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Kurt Gödel
1906 - 1978 (72 years)
Kurt Friedrich Gödel was a logician, mathematician, and philosopher. Considered along with Aristotle and Gottlob Frege to be one of the most significant logicians in history, Gödel had an immense effect upon scientific and philosophical thinking in the 20th century, a time when others such as Bertrand Russell, Alfred North Whitehead, and David Hilbert were using logic and set theory to investigate the foundations of mathematics, building on earlier work by the likes of Richard Dedekind, Georg Cantor and Gottlob Frege.
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Cicero
106 BC - 43 BC (63 years)
Marcus Tullius Cicero was a Roman statesman, lawyer, scholar, philosopher, writer and Academic skeptic, who tried to uphold optimate principles during the political crises that led to the establishment of the Roman Empire. His extensive writings include treatises on rhetoric, philosophy and politics. He is considered one of Rome's greatest orators and prose stylists and the innovator of what became known as "Ciceronian rhetoric". Cicero was educated in Rome and in Greece. He came from a wealthy municipal family of the Roman equestrian order, and served as consul in 63 BC.
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Alasdair MacIntyre
#49
Overall Influence
1929 - Present (95 years)
#37
Richard Rorty
#35
Overall Influence
1931 - 2007 (76 years)
Richard McKay Rorty was an American philosopher. Educated at the University of Chicago and Yale University, he had strong interests and training in both the history of philosophy and in contemporary analytic philosophy. Rorty's academic career included appointments as the Stuart Professor of Philosophy at Princeton University, Kenan Professor of Humanities at the University of Virginia, and Professor of Comparative literature at Stanford University. Among his most influential books are Philosophy and the Mirror of Nature , Consequences of Pragmatism , and Contingency, Irony, and Solidarity .
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Parmenides
515 BC - 470 BC (45 years)
Parmenides of Elea was a pre-Socratic Greek philosopher from Elea in Magna Graecia. Parmenides was born in the Greek colony of Elea, from a wealthy and illustrious family. His dates are uncertain; according to doxographer Diogenes Laërtius, he flourished just before 500 BC, which would put his year of birth near 540 BC, but in the dialogue Parmenides Plato has him visiting Athens at the age of 65, when Socrates was a young man, c. 450 BC, which, if true, suggests a year of birth of c. 515 BC. He is thought to have been in his prime around 475 BC.
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John Rawls
#15
Overall Influence
1921 - 2002 (81 years)
John Bordley Rawls was an American moral, legal and political philosopher in the liberal tradition. Rawls has been described as one of the most influential political philosophers of the 20th century.
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Avicenna
980 - 1037 (57 years)
Ibn Sina , commonly known in the West as Avicenna , was the preeminent philosopher and physician of the Muslim world, flourishing during the Islamic Golden Age, serving in the courts of various Iranian rulers. He is often described as the father of early modern medicine. His philosophy was of the Muslim Peripatetic school derived from Aristotelianism.
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Alfred Tarski
1901 - 1983 (82 years)
Alfred Tarski was a Polish-American logician and mathematician. A prolific author best known for his work on model theory, metamathematics, and algebraic logic, he also contributed to abstract algebra, topology, geometry, measure theory, mathematical logic, set theory, and analytic philosophy.
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Epicurus
342 BC - 270 BC (72 years)
Epicurus was an ancient Greek philosopher and sage who founded Epicureanism, a highly influential school of philosophy. He was born on the Greek island of Samos to Athenian parents. Influenced by Democritus, Aristippus, Pyrrho, and possibly the Cynics, he turned against the Platonism of his day and established his own school, known as "the Garden", in Athens. Epicurus and his followers were known for eating simple meals and discussing a wide range of philosophical subjects. He openly allowed women and slaves to join the school as a matter of policy. Of the over 300 works said to have been written by Epicurus about various subjects, the vast majority have been destroyed.
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George Berkeley
1685 - 1753 (68 years)
George Berkeley – known as Bishop Berkeley – was an Anglo-Irish philosopher whose primary achievement was the advancement of a theory he called "immaterialism" . This theory denies the existence of material substance and instead contends that familiar objects like tables and chairs are ideas perceived by the mind and, as a result, cannot exist without being perceived. Berkeley is also known for his critique of abstraction, an important premise in his argument for immaterialism.
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Alfred North Whitehead
1861 - 1947 (86 years)
Alfred North Whitehead was an English mathematician and philosopher. He created the philosophical school known as process philosophy, which has been applied in a wide variety of disciplines, including ecology, theology, education, physics, biology, economics, and psychology.
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Voltaire
1694 - 1778 (84 years)
François-Marie Arouet , known by his nom de plume M. de Voltaire , was a French Enlightenment writer, philosopher , satirist, and historian. Famous for his wit and his criticism of Christianity and of slavery, Voltaire was an advocate of freedom of speech, freedom of religion, and separation of church and state.
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Max Weber
1864 - 1920 (56 years)
Maximilian Karl Emil Weber was a German sociologist, historian, jurist and political economist, who is regarded as among the most important theorists of the development of modern Western society. He was one of the central figures in the development of sociology and the social sciences, and his ideas profoundly influence social theory and research.
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Saul Kripke
#69
Overall Influence
1940 - 2022 (82 years)
#48
Gilles Deleuze
#31
Overall Influence
1925 - 1995 (70 years)
Gilles Louis René Deleuze 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 and A Thousand Plateaus , both co-written with psychoanalyst Félix Guattari. His metaphysical treatise Difference and Repetition is considered by many scholars to be his magnum opus.
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Daniel Dennett
#13
Overall Influence
1942 - Present (82 years)
#50
Max Stirner
1806 - 1856 (50 years)
Johann Kaspar Schmidt , known professionally as Max Stirner, was a German post-Hegelian philosopher, dealing mainly with the Hegelian notion of social alienation and self-consciousness. Stirner is often seen as one of the forerunners of nihilism, existentialism, psychoanalytic theory, postmodernism and individualist anarchism.
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