Credits

Portraits in the quotes

The portraits come from Wikimedia Commons; they are shown in greyscale and cropped. Follow each link to see the original file page.

• Benjamin Franklin Photo: Joseph-Siffred Duplessis
  Licence: Public domain
• Bertrand Russell Photo: Bassano Ltd
  Licence: Public domain
• Buda Photo: พระมหาเทวประภาส วชิรญาณเมธี (ผู้ถ่าย-ปล่อยสัญญาอนุญาตภาพให้นำไปใช้ได้…
  Licence: CC BY-SA 3.0
• Camilo José Cela Photo: Unknown photographer
  Licence: CC BY 4.0
• Christopher Reeve Photo: Jbfrankel
  Licence: CC BY-SA 3.0
• Confucio Photo: unknown author
  Licence: Public domain
• George Bernard Shaw Photo: No known restrictions on publication. Creator(s): Bain News Service, …
  Licence: Public domain
• Groucho Marx Photo: ABC Photo
  Licence: Public domain
• Henry Ford Photo: Ford Motor Company. Photographic Department
  Licence: Public domain
• Isaac Asimov Photo: Phillip Leonian [1] from New York World-Telegram & Sun.[2]
  Licence: Public domain
• J. R. R. Tolkien Photo: Unknown photo studio commissioned by Tolkien's students 1925/6 (priva…
  Licence: Public domain
• Joe E. Lewis Photo: Film screenshot (Universal Pictures)
  Licence: Public domain
• Jorge Luis Borges Photo: Grete Stern
  Licence: Public domain
• José Ortega y Gasset Photo: unknown author
  Licence: Public domain
• Lao Tse Photo: Unknown authorUnknown author
  Licence: Public domain
• Leonardo da Vinci Photo: Attributed to Francesco Melzi
  Licence: Public domain
• Mahatma Gandhi Photo: Elliott & Fry
  Licence: Public domain
• Manolo García Photo: Xxbcn
  Licence: CC BY-SA 4.0
• Mario Moreno “Cantinflas” Photo: Press photo
  Licence: Public domain
• Mark Knopfler Photo: Sebastien.gross
  Licence: CC BY-SA 4.0
• Mark Twain Photo: A.F. Bradley, New York
  Licence: Public domain
• Napoleon Hill Photo: Unknown authorUnknown author
  Licence: Public domain
• Orson Scott Card Photo: Nihonjoe
  Licence: CC BY 3.0
• Paul “Red” Adair Photo: Harry Pot
  Licence: CC BY-SA 3.0 nl
• T. S. Eliot Photo: Lady Ottoline Morrell
  Licence: Public domain

The images for "Anonymous" and Evan Esar are original illustrations.

Icons and fonts

Icons: Font Awesome (CC BY 4.0). Fonts: Source Sans 3 y Source Serif 4, de Adobe (SIL Open Font License 1.1).