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| Amir Khusraw (portrait) presents a book of poetry to Ala'uddin Khalji. Khamsa (Quintet) by Amir Khusraw Dihlavi. Balkh, Afghanistan, 1503-1504 (Smithsonian, S1986.213).jpg | Ala'uddin Muhammad al-Harawi (Calligrapher), 1503-1504 | Public domain |
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| Antoine de Saint-Euxpery (1920).jpg | Unknown author Unknown author | Public domain |
| Antoine Quatremère de Quincy by F Bonneville.jpg | François Bonneville (fl. 1787, acc. to npg.org ) | Public domain |
| Antoine-Louis-Claude Destutt de Tracy.png | Charles Toussaint Labadye | Public domain |
| Antoinette Louisa Brown Blackwell.jpg | Unknown author Unknown author | Public domain |
| Anton Graff (1736 - 1813) - Doctor and Philosopher Johann Georg, Ritter von Zimmermann - 1034E - Gemäldegalerie.jpg | Anton Graff | Public domain |
| Anton Günther (1783-1863).jpg | Druck: Kargl., F | Public domain |
| Anton LaVey, 1959.jpg | San Francisco Chronicle | Public domain |
| Anton Stres crop.jpg | Anton_Stres_and_Ljubica_Jelušič.jpg : MORS (Vekoslav Rajh) derivative work: Sporti ( talk… | CC BY 3.0 |
| Antoni Lange - fotografia portretowa.jpg | Unknown photographer | Public domain |
| Antonin Vranicky.jpg | Buchhändler | Public domain |
| Antonin-Dalmace Sertillanges.jpg | Unknown author Unknown author | Public domain |
| Antonio Escohotado.jpg | Igor Gayarre Conde | CC BY-SA 3.0 |
| Antonio Labriola.jpg | Unknown author | Public domain |
| Antonio Negri (cropped).jpg | Rosa Luxemburg-Stiftung | CC BY 2.0 |
| Antonio Skarmeta (1981).jpg | Hans van Dijk for Anefo | CC BY-SA 3.0 nl |
| Antoniobanfi01.jpg | Italian Senate | CC BY 3.0 it |
| AntonPannekoek1908.jpg | Unknown photographer | CC0 |
| Antony flew.jpg | عبد الله الصيدلي at Arabic Wikipedia | Public domain |
| Antun Saadeh.jpg | Syrian Social Nationalist Party (SSNP) | Public domain |
| António Damásio no Fronteiras do Pensamento Porto Alegre 2013 cropped.png | Fronteiras do Pensamento | CC BY-SA 2.0 |
| ANWhitehead.jpg | unknown | Public domain |
| Apel Notation.jpg | VitVit | CC BY-SA 4.0 |
| Apollonius of Tyana.jpg | Unknown author Unknown author | Public domain |
| Apuleius-Kontorniat.jpg | Johann Jacob Bernoulli | Public domain |
| Apáczai Csere János Gimnázium 2019 07.jpg | Pasztilla aka Attila Terbócs | CC BY-SA 4.0 |
| Arai Hakuseki - Japanischer Gelehrter.jpg | Unknown author Unknown author | Public domain |
| Arcesilaus and Carneades.jpg | Cicero_Academica_1810_title_page.jpg : Marcus Tullius Cicero derivative work: Singinglemo… | Public domain |
| Archbishop Gomez.jpg | InkWeaverAtHeart | CC BY-SA 4.0 |
| Archytas of Taras.jpg | NikonZ7II | CC BY-SA 4.0 |
| Argyropoulos (detail) Calling of the Apostles.JPG | GHIRLANDAIO, Domenico (b. 1449, Firenze, d. 1494, Firenze) | Public domain |
| Ariel and Will Durant.jpg | Bill Murphy, Los Angeles Times | CC BY 4.0 |
| Aristide Bruant by Nadar ca. 1898 bw restored cut.jpg | Nadar | Public domain |
| Aristides.jpg | Unknown author Unknown author | Public domain |
| Aristippus.jpg | Gottlieb Friedrich Riegel (1724–1784) | Public domain |
| Aristocle di Messene.png | Giuseppe Emanuele Ortolani | Public domain |
| Aristosseno.jpg | Guglielmo Morghen | Public domain |
| Aristotle Altemps Inv8575.jpg | After Lysippos | Public domain |
| Arjadeva.jpg | Rartat | Public domain |
| Armand Calinescu.jpg | Unknown author Unknown author | Public domain |
| Arnaldus de Villanova.jpg | Unknown derivative work by JPS68 | Public domain |
| Arne Næss, 2003 (cropped) (cropped).jpg | Vindheim | CC BY-SA 3.0 |
| Arnold Geulincx.gif | Unknown author Unknown author | Public domain |
| Arnold J. Toynbee Anefo.jpg | Unknown author Unknown author | CC BY-SA 3.0 nl |
| Arnold Ruge Schriftsteller.jpg | Unknown author Unknown author | Public domain |
| Arnold Zweig, Berlin 1956 (1).jpg | Hans-Joachim Koch | CC BY-SA 4.0 |
| Arrian7.jpg | User:WikiSysop | CC BY 2.5 |
| Artgate Fondazione Cariplo - Canova Antonio, Critone chiude gli occhi a Socrate.jpg | Antonio Canova | CC BY-SA 3.0 |
| Arthur Danto, 2012.jpg | AmeOnTheLoose at Italian Wikipedia | CC BY-SA 3.0 |
| Arthur de Gobineau.jpg | Paul Mahaut (Mathilde Sallier de La Tour, née Ruinart de Brimont) | Public domain |
| Arthur Drews.jpg | Oscar Suck, Karlsruhe | Public domain |
| Arthur Koestler (1969).jpg | Eric Koch for Anefo | CC BY-SA 3.0 |
| Arthur Schopenhauer by J Schäfer, 1859b.jpg | Johann Schäfer | Public domain |
| Arthur Stanley Eddington.jpg | George Grantham Bain Collection, Library of Congress Prints and Photographs Division Wash… | Public domain |
| Arturo Sosa in January 2017.jpg | Irekia | CC BY 2.0 |
| Arun Gandhi at Martin Luther King, Jr. Memorial 4 April 2012 crop (cropped).jpg | Medill DC | CC BY 2.0 |
| Asanga.JPG | Unknown author | Public domain |
| Aspasie - Musée de Pergame - Berlin.jpg | Daigaz | CC BY 3.0 |
| Associate of Jan Cornelisz. Vermeyen - Portrait of a Man (possibly Alfonso de Valdés).jpg | Workshop of Jan Cornelisz Vermeyen | Public domain |
| Astronaut Joseph Kerwin portrait.jpg | NASA | Public domain |
| Athanasius Kircher.jpg | Cornelis Bloemaert | Public domain |
| Athenodorus - The Greek Stoic Philosopher Athenodorus Rents a Haunted House.jpg | Henry Justice Ford | Public domain |
| Auberon Herbert, circa 1890s.png | Frederick Hollyer | Public domain |
| Audre Lorde.jpg | K. Kendall | CC BY 2.0 |
| August Batsch.jpg | unknown, uploaded by user L-Cain on de.wikipedia | Public domain |
| August Cieszkowski 1851-1862 (737608) (cropped).jpg | Maksymilian Fajans | Public domain |
| August Wilhelm von Schlegel.png | Adolf Hohneck | Public domain |
| Auguste de Villers de L'Isle-Adam.jpg | Unknown author Unknown author | Public domain |
| Auguste Forel (1899) (cropped).png | Anonymous Unknown author | Public domain |
| Augusto Paolo Lojudice con il pallio.jpg | Pufui PcPifpef | CC BY-SA 4.0 |
| Augusto Vera.png | Unknown author Unknown author | Public domain |
| Auli Gellii Noctium Atticarum 1706.jpg | Draughtsman: Jan Goeree. Engraver: Pieter Sluyter | Public domain |
| Aulus Persius Flaccus.jpeg | Unknown author Unknown author | Public domain |
| Auroux-Retrato de Juan Caramuel de Lobkowitz.jpg | Nicolás Auroux-Biblioteca Nacional de España | CC BY-SA 4.0 |
| Author Martin Gardner at a CSICOP Executive Council Meeting in 1979.jpg | RobertoTenore | CC BY-SA 3.0 |
| Autorenbild Ibn Botlan.jpg | Unknown author Unknown author | Public domain |
| Avishai Margalit.jpg | עדנה אולמן-מרגלית | Attribution |
| Avital Ronell at European Graduate School in 2006.jpg | lotu5 | CC BY-SA 3.0 |
| Avraham Issac Kook portrait cropped.JPG | Avraham_Issac_Kook_portrait.JPG : Shuki derivative work: אני ואתה ( talk ) | Public domain |
| AVT Gilles-Deleuze 6342.webp | Tintinades | CC BY-SA 4.0 |
| Axel Honneth al Magnànim (33996599194) (cropped).jpg | Institució Alfons el Magnànim | CC BY-SA 4.0 |
| Axel Hägerström.png | Emil Finn | Public domain |
| Ayn Rand (1943 Talbot portrait).jpg | Photo portrait credited to "Talbot" (though not on original dust jacket). Published by th… | Public domain |
| Azmi Bishara (00370528).jpg | Knesset photographer | CC BY-SA 4.0 |
| B.F. Skinner at Harvard circa 1950 (cropped).jpg | Silly rabbit | CC BY 3.0 |
| BaghaJatin12.jpg | Original uploader was Dwaipayanc at en.wikipedia | Public domain |
| Bahrdt old.jpg | dexx | Public domain |
| Bakunin Nadar.jpg | Nadar | Public domain |
| Bakuvi mavzoley.JPG | Эмин Маммадов | Public domain |
| BalthasarBekker.png | Joh. Hilarides | Public domain |
| Banzhao.jpg | Unknown author | Public domain |
| Barbara Cassin (14360162318) (cropped).jpg | tomislav medak | CC BY-SA 2.0 |
| Barlaam, Carrying a Should.jpg | Follower of Hans Schilling, from the Workshop of Diebold Lauber Digital image courtesy of… | CC BY-SA 4.0 |
| Barrett.jpg | Unknown author Unknown author | Public domain |
| Barthélemy Prosper Enfantin.jpg | Unknown author Unknown author | Public domain |
| Basil of Caesarea.jpg | Unknown author Unknown author | Public domain |
| Bastiat.jpg | Émile Desmaisons. Lithograph by Auguste-Hilaire Léveillé. | Public domain |
| BBolzano.jpg | Unknown author Unknown author | Public domain |
| Bearded Philosopher - Hermarcus or Democritus Palazzo Massimo alle Terme.jpg | Ian Scott | CC BY-SA 2.0 |
| Beatus Rhenanus - Imagines philologorum.jpg | Johann Jakob Haid | Public domain |
| Beecherc.jpg | The original uploader was AlexPlank at English Wikipedia . | Public domain |
| Beijing Ancient Observatory 20090715-19 (cropped).jpg | Hans A. Rosbach | CC BY-SA 3.0 |
| Beinsa Duno.jpg | unknown | Public domain |
| Bellhooks.jpg | Cmongirl | Public domain |
| Bellini Lorenzo Giustiniani.jpg | Gentile Bellini | Public domain |
| Ben Anderson.png | UCD School of Sociology | CC BY 4.0 |
| Benedetti - Resolutio omnium Euclidis problematum, 1553 - 11183.jpg | Benedetti, Giovanni Battista | Public domain |
| Benedetto Croce 01.jpg | Mario Nunes Vais | Public domain |
| Benedict-Augustin Morel (1809–1873).gif | Unknown author Unknown author | Public domain |
| Benedykt XVI (2010-10-17) 2.jpg | Kancelaria Prezydenta RP | GFDL 1.2 |
| Benjamin D. Maxham - Henry David Thoreau - Restored - greyscale - straightened.jpg | B. D. Maxham | Public domain |
| Benjamin Lee Whorf by Bachrach (cropped).jpg | Bachrach Studios | Public domain |
| Benjamin Tucker.jpg | Unknown author Unknown author | Public domain |
| Benozzo Gozzoli, Pletone, Cappella dei Magi.jpg | Benozzo Gozzoli | Public domain |
| Ber Borochov.jpg | Atelier Bermann, Vienna , Austria | Public domain |
| Berdichevski. old.jpg | Unknown author | Public domain |
| Bernard D'Espagnat.jpg | Templeton Prize | CC BY 2.0 |
| Bernard Klassen.jpg | Florida Gov | Public domain |
| Bernard Lonergan SJ.jpg | BCLonergan | CC BY-SA 4.0 |
| Bernard-Henri Lévy par Marc Roussel en 2024.jpg | Marc Roussel | CC BY 4.0 |
| BernardBosanquetPhilosopher.jpg | Unknown author Unknown author | Public domain |
| Bernardino de Sahagún (2).jpg | Anonymous Unknown author | CC BY-SA 4.0 |
| Bernardino Telesio.jpg | Raffaello Sanzio Morghen (1758–1833) | Public domain |
| Bernd Lucke (2014).jpg | Mathesar | CC BY-SA 3.0 |
| Bernhard von Clairvaux (Initiale-B).jpg | Unknown author Unknown author | Public domain |
| Bert Hellinger.jpg | CeStu | CC BY-SA 3.0 |
| Bertrand Russell photo.jpg | Bassano Ltd | Public domain |
| Bertrando-Spaventa.png | Henri Le Lieure | Public domain |
| Bhagwan Das 1969 stamp of India.jpg | India Post, Government of India | GODL-India |
| Bharadwaja.jpg | Company School | Public domain |
| Bias Pio-Clementino Inv279.jpg | Unknown artist Unknown artist | Public domain |
| Bildnis des Theodor Zwinger.jpg | Hans Bock der Ältere | CC0 |
| Bio-papus-image-1.jpg | Deucaleon | Public domain |
| Birnbaum Nathan.jpg | Unknown author | Public domain |
| Bishop John Shelby Spong portrait 2006.png | Scott Griessel, creatista on flickr.com | CC BY-SA 2.0 |
| Bl Ivan Merz u Bazilici Srca Isusova 13 rujna 2008.jpg | SpeedyGonsales | CC BY 3.0 |
| Blaise Pascal Versailles.JPG | unknown; a copy of the painting of François II Quesnel, which was made for Gérard Edelinc… | Public domain |
| Boaventurasousasantos06052007.jpg | Valter Campanato/ABr | CC BY 3.0 br |
| Bob Carroll.jpg | Sgerbic | CC BY-SA 3.0 |
| BodhidharmaYoshitoshi1887.jpg | Yoshitoshi | Public domain |
| Bodrum Belediyesi 19.jpg | Gargarapalvin | CC BY 4.0 |
| Boethius initial consolation philosophy.jpg | Unknown author | Public domain |
| Bolesław Prus (ca. 1905).jpg | Wilhelm Feldman (1868-1919). | Public domain |
| Boltzmann-Ludwig.jpg | Unknown author Unknown author | Public domain |
| Borgo degli Albizi 18-20, Palazzo valori-altoviti (dei Visacci), erme di g.b. caccini, 1604 circa, piano terra 04 donato acciaiuoli 3.jpg | Francesco Bini | CC BY-SA 4.0 |
| Boris Chicherin.jpg | Unknown author Unknown author | Public domain |
| Bozorgmehr.png | Anoushirvan | CC BY-SA 3.0 |
| BpStanilawWielgus.jpg | Maciek 86 | CC BY-SA 4.0 |
| Bracha L. Ettinger 2009 (cropped).jpg | Amit Berlowitz | CC BY-SA 2.0 |
| Braidotti.jpg | Photograph by Maarten Hartman | CC0 |
| Brainwash Festival 2015 - John Gray (3).jpg | Vera de Kok | CC BY-SA 4.0 |
| Brian Barry.jpg | Unknown author | No restrictions |
| Brigitte Vasallo.jpg | Pol Galofre Molero | CC BY-SA 4.0 |
| Brisson Mathurin Jacques 1723-1806.png | Unknown author | Public domain |
| Brockhaus and Efron Jewish Encyclopedia e1 134-0.jpg | Unknown author Unknown author | Public domain |
| Brockhaus and Efron Jewish Encyclopedia e9 615-0.jpg | Unknown author Unknown author | Public domain |
| Bronislaw Baczko.JPG | Mariusz Kubik, http://www.mariuszkubik.pl | CC BY 2.5 |
| Bronnikov Thrasea Paetus.jpg | Fyodor Bronnikov | Public domain |
| Bronson Alcott from NYPL gallery.jpg | Photographer unidentified | Public domain |
| Brooks Adams, c. 1910.jpg | Unknown author Unknown author | Public domain |
| BruceAckerman2017(cropped).png | PeaceActionMaine | CC BY 3.0 |
| Brunetto latini.jpg | Unknown author Unknown author | Public domain |
| Bruno Bauer.jpg | unknown, must be dead for more than 70 years | Public domain |
| Bruno Latour in Taiwan P1250394 (cropped).jpg | KOKUYO | CC BY-SA 4.0 |
| Bruno Leoni (1913-1967).jpg | Unknown author Unknown author | Public domain |
| Bryan Magee caricature.jpg | קפקא | CC BY-SA 4.0 |
| Bucharin.bra.jpg | Unknown author Unknown author | Public domain |
| BuckminsterFuller1.jpg | en:User:Edgy01 (Dan Lindsay) | CC BY 3.0 |
| Budai, British Museum.jpg | Photograph by Mike Peel ( www.mikepeel.net ). | CC BY-SA 4.0 |
| Buddha in Sarnath Museum (Dhammajak Mutra).jpg | พระมหาเทวประภาส วชิรญาณเมธี (ผู้ถ่าย-ปล่อยสัญญาอนุญาตภาพให้นำไปใช้ได้เพื่อการศึกษาโดยอยู่… | CC BY-SA 3.0 |
| BugaevNV-MatematicheskySbornik1904-2.jpg | BugaevNV-MatematicheskySbornik1904.jpg : Unknown derivative work: Bff | Public domain |
| BugleRock DVG6.JPG | User:Sarvagnya | CC BY 2.5 |
| Bundesarchiv B 145 Bild-F023138-0019, Frankfurt, Friedenspreis des Deutschen Buchhandels.jpg | Jens Gathmann | CC BY-SA 3.0 de |
| Bundesarchiv B 145 Bild-F065001-0017, Bonn, CDU-Friedenskongress, Pannenberg.jpg | Engelbert Reineke | CC BY-SA 3.0 de |
| Bundesarchiv Bild 102-00457, Emanuel Lasker.jpg | Unknown author Unknown author | CC BY-SA 3.0 de |
| Bundesarchiv Bild 119-1600-06, Houston Stewart Chamberlain.jpg | Unknown author Unknown author | CC BY-SA 3.0 de |
| Bundesarchiv Bild 146-1986-107-28A, Ludwig Joseph Brentano.jpg | Unknown Unknown | CC BY-SA 3.0 de |
| Bundesarchiv Bild 146-1987-074-16, Dietrich Bonhoeffer.jpg | Unknown author Unknown author | CC BY-SA 3.0 de |
| Bundesarchiv Bild 146-2005-0165, Carl Heinrich Becker.jpg | Unknown Unknown | CC BY-SA 3.0 de |
| Bundesarchiv Bild 146II-744, Kurt Huber.jpg | Unknown Unknown | CC BY-SA 3.0 de |
| Bundesarchiv Bild 183-2007-0705-500, Guido von List.jpg | Schiffer, Conrad H. | CC BY-SA 3.0 de |
| Bundesarchiv Bild 183-35545-0009, Berlin, Ernst Bloch auf 15. Schriftstellerkongress.jpg | Krueger | CC BY-SA 3.0 de |
| Bundesarchiv Bild 183-40377-0007, Weimar, Heinrich-Heine-Tagung, Dr. Wolfgang Harich.jpg | Wittig | CC BY-SA 3.0 de |
| Bundesarchiv Bild 183-76791-0009, Berlin, 15. Volkskammersitzung, Robert Havemann.jpg | Horst Sturm | CC BY-SA 3.0 de |
| Bundesarchiv Bild 183-D0116-0041-019, Albert Schweitzer.jpg | Unknown Unknown | CC BY-SA 3.0 de |
| Bundesarchiv Bild 183-J0827-500-002, Ferdinand Lassalle.jpg | Philipp Graff | Public domain |
| Bundesarchiv Bild 183-R06610, Oswald Spengler.jpg | Unknown author Unknown author | CC BY-SA 3.0 de |
| BurbulisGE.jpg | Leo Medvedev/Лев Леонидович Медведев | CC BY-SA 4.0 |
| Burghers-Pantaenus.jpg | Burghers, Michael | Public domain |
| Bust Aiskhines BM 1839 n2.jpg | Unknown artist Unknown artist | CC BY 2.5 |
| Bust Metrodoros Glyptothek Munich.jpg | Unknown artist Unknown artist | Public domain |
| Bust of Cicero (1st-cent. BC) - Palazzo Nuovo - Musei Capitolini - Rome 2016.jpg | José Luiz | CC BY-SA 4.0 |
| Bust of Demetrius Phalereus at Kunsthistorisches Museum.jpg | Yair Haklai | CC BY-SA 4.0 |
| Bust of Ibn Khaldun (Casbah of Bejaia, Algeria).jpg | Reda Kerbush | CC BY-SA 4.0 |
| Bust of Leo Baeck.jpg | WienerLibraryWIR | CC BY-SA 4.0 |
| Bust of Xenophon.jpg | Carole Raddato | CC BY-SA 2.0 |
| Bust Polemon philosopher 140 AD, NAMA 427 102864.jpg | Zde | CC BY-SA 3.0 |
| Busta Eliška Přemyslovna.jpg | Packare | CC0 |
| Buste d'Ibn al-Jatib.jpg | Boogiemanne | CC BY-SA 4.0 |
| Buste de Godefroid Kurth.jpg | D'Hoest Nicolas | CC BY-SA 4.0 |
| Busto di Parmenide (cropped).jpg | Sergio Spolti | CC BY-SA 4.0 |
| Buya hamka.jpg | Vedolique | CC BY-SA 4.0 |
| Bél Mátyás-001.jpg | Unknown author Unknown author | Public domain |
| Béla Hamvas.jpg | [unbekannt] | Public domain |
| Bérenger de Tours.jpg | Hendrik Hondius I | Public domain |
| Büste von Max Tau in der Bibliothek der Christian-Albrechts-Universität (CAU) (Kiel 41.636).jpg | Magnussen, Friedrich (1914-1987) | CC BY-SA 3.0 de |
| Bł. Karolina Kózka.jpg | fotograf nieznany | Public domain |
| C-P-Tiele-02.jpg | Pieter de Josselin de Jong | Public domain |
| C. D. Broad philosopher.png | Paul Arthur Schilpp. | Public domain |
| C. Lloyd Morgan. Photogravure by Synnberg Photo-gravure Co., Wellcome L0023072 (cropped).jpg | Unknown author | CC BY 4.0 |
| C. St. John Sprigg 1938 Alt.jpg | Unknown author Unknown author | Public domain |
| C.H. Steinthal. Photogravure by Synnberg Photo-gravure Co., Wellcome L0023074.jpg | Unknown author | CC BY 4.0 |
| C14 7404-SolomonMarcus.edited.jpg | Taken by Alexander Okhotin on 8 June 2007 in Turku, Finland during the lecture given at t… | CC BY-SA 3.0 |
| Ca' Rezzonico - Eraclito 1705 - Giuseppe Torretti.jpg | Didier Descouens | CC BY-SA 4.0 |
| Cabeo.jpg | Unknown author Unknown author | Public domain |
| Cai Yuanpei-loc-nodate-crop.jpg | The Library of Congress | Public domain |
| Camil Petrescu.jpg | Unknown author Unknown author | Public domain |
| Camillo Berneri.jpg | Unknown author Unknown author | Public domain |
| Candrakirti.gif | Original uploader was Baodo at vi.wikipedia | Public domain |
| Cannery Row Sculpture (15398335477).jpg | Tony Hisgett from Birmingham, UK | CC BY 2.0 |
| Card. Amigo Vallejo (30279529854).jpg | Conferencia Episcopal Española | CC BY-SA 2.0 |