Photo credits

Author photos and portraits come from Wikimedia Commons. We cropped and resized them. Each one is listed with its creator, where known, and its licence. Ancient figures are shown through later artworks, not real likenesses.

• Abraham LincolnAlexander Gardner. Public domain. Source
• Albert EinsteinFerdinand Schmutzer / Adam Cuerden. Public domain. Source
• Alfred KorzybskiThe original uploader was Kinar at Polish Wikipedia.. CC BY-SA 3.0. Source
• André GideOttoline Morrell (1873-1938). Public domain. Source
• Anne FrankCreator not recorded. Public domain. Source
• AristotleAfter Lysippos. Public domain. Source
• Arthur SchopenhauerJohann Schäfer. Public domain. Source
• Benjamin FranklinJoseph-Siffred Duplessis. Public domain. Source
• Bernice Johnson ReagonUnited States Government. Public domain. Source
• Bertrand RussellCreator not recorded. Public domain. Source
• Bill GatesBogdan Hoyaux / European Union. CC BY 4.0. Source
• Brian TracyDaniel Wikberg. CC BY 2.0. Source
• Bruce LeeNational General Pictures. Public domain. Source
• Buckminster FullerEdgy01 (Dan Lindsay). CC BY 3.0. Source
• Buddhaพระมหาเทวประภาส วชิรญาณเมธี (ผู้ถ่าย-ปล่อยสัญญาอนุญาตภาพให้นำไปใช้ได้เพื่อการศึก. CC BY-SA 3.0. Source
• Carl JungCreator not recorded. Public domain. Source
• Chuang TzuCreator not recorded. Public domain. Source
• ConfuciusAnonymous Chinese painter of the Western Han period. Public domain. Source
• Dalai LamaChristopher Michel. CC BY-SA 4.0. Source
• Dale CarnegieCreator not recorded. Public domain. Source
• Donald TrumpDaniel Torok. Public domain. Source
• Dorothy ThompsonCreator not recorded. Public domain. Source
• Dr. SeussAl Ravenna, New York World-Telegram and the Sun staff photographer. Public domain. Source
• Elbert HubbardAalejandro1995. Public domain. Source
• Eleanor RooseveltFDR Presidential Library & Museum. CC BY 2.0. Source
• Elizabeth KennyNew York World-Telegram and the Sun staff photographer. Public domain. Source
• EpictetusTheodoor Galle. Public domain. Source
• Eric HofferWhite House of the President of the United States; uploaded to YouTube by TheLBJ. Public domain. Source
• Forrest ChurchRubin Nizri. CC BY-SA 3.0. Source
• G. K. ChestertonErnest Herbert Mills. Public domain. Source
• Havelock EllisSmithsonian Institution from United States. Public domain. Source
• Helen KellerLos Angeles Times; restored by User:Rhododendrites. Public domain. Source
• Henri BergsonHenri Manuel. Public domain. Source
• Henry JamesJohn Singer Sargent (died 1925). Public domain. Source
• Jean de La BruyèreÉlisabeth Louise Vigée Le Brun / After Pierre Drevet / After Jean Dieu de Saint-. Public domain. Source
• Jean-Paul SartreT1980. CC BY 3.0. Source
• Joe NamathCreator not recorded. Public domain. Source
• Johann Wolfgang von GoetheJoseph Karl Stieler. Public domain. Source
• John DeweyEva Watson-Schütze. Public domain. Source
• John F. KennedyCecil W. Stoughton. Public domain. Source
• John LubbockLock & Whitfield. Public domain. Source
• Jon Kabat-ZinnExperienceLifeMag. CC BY 3.0. Source
• Jonathan KozolBenFrantzDale. CC BY-SA 3.0. Source
• Kathleen NorrisArnold Genthe. Public domain. Source
• Lama YesheTheMindOrchestra. CC BY 3.0. Source
• Lao TzuZhang Lu. Public domain. Source
• Leo TolstoySergei Prokudin-Gorskii. Public domain. Source
• Leonardo da VinciAttributed to Francesco Melzi. Public domain. Source
• LiberaceAllan warren. CC BY-SA 3.0. Source
• Mahatma GandhiElliott & Fry. Public domain. Source
• Marcus AureliusCreator not recorded. CC BY 2.5. Source
• Marian Wright EdelmanNancy Pelosi from San Francisco, CA. CC BY 2.0. Source
• Marie CurieCreator not recorded. Public domain. Source
• Maya AngelouYork College ISLGP. CC BY 2.0. Source
• MichelangeloAttributed to Daniele da Volterra. Public domain. Source
• Mortimer AdlerCenter for the Study of The Great Ideas. CC BY-SA 3.0. Source
• Napoleon BonaparteJacques-Louis David. Public domain. Source
• Napoleon HillCreator not recorded. Public domain. Source
• Nathaniel HawthorneMathew Benjamin Brady. Public domain. Source
• Nelson MandelaKingkongphoto & www.celebrity-photos.com from Laurel. CC BY-SA 2.0. Source
• OvidLucasaw. CC BY-SA 4.0. Source
• Pablo PicassoArgentina. Revista Vea y Lea. Public domain. Source
• Pearl BuckCreator not recorded. Public domain. Source
• Pema ChodronCreator not recorded. CC BY-SA 2.0. Source
• Ralph Waldo EmersonScewing. Public domain. Source
• René DescartesAfter Frans Hals. Public domain. Source
• Richard BachCorsair133693. CC BY-SA 3.0. Source
• Robert Louis StevensonHenry Walter Barnett. Public domain. Source
• Robert SchullerHour of Power NL. CC BY 3.0. Source
• RumiHossein Behzad. Public domain. Source
• Sam LevensonPhotographer: "Bruno of Hollywood" Uploaded by Ronzoni at en.wikipedia. Public domain. Source
• SenecaCalidius. CC BY-SA 3.0. Source
• Stephen CoveySterling.morris. Public domain. Source
• Steve JobsCreator not recorded. CC BY-SA 3.0. Source
• Theodore RooseveltAdam Cuerden. Public domain. Source
• Thomas DewarCreator not recorded. Public domain. Source
• Thomas EdisonLouis Bachrach, Bachrach Studios, restored by Michel Vuijlsteke. Public domain. Source
• Tony RobbinsRandy Stewart. CC BY-SA 2.0. Source
• Vince LombardiCreator not recorded. Public domain. Source
• VirgilArmando Mancini. Public domain. Source
• W. Clement StoneOaktree b. CC BY-SA 2.5 ca. Source
• Walt DisneyBoy Scouts of America. Public domain. Source
• Wayne DyerPhilkon Phil Konstantin. Public domain. Source
• Will RogersMelbourne Spurr. Public domain. Source
• William JamesAlice Boughton. Public domain. Source
• Winston ChurchillCreator not recorded. Public domain. Source