Sun Tzu
Henrietta Elizabeth Marshall
Henry David Thoreau
The 9/11 Commission
Jacob Abbott
Benjamin Franklin
Edward Gibbon
Various
Charles Austin Beard
Joseph Devlin
Alexander Hamilton
Grenville Kleiser
Friedrich Nietzsche
Charles Darwin
Sigmund Freud
Anicius Manlius Severinus Boethius
Aristotle
Henry Stanton
Albert Einstein
James Allen
John B. Bury
Unknown
Mark Twain
Marcus Aurelius
Confucius
William E. B. Du Bois
Samuel B. Harding
Niccolò Machiavelli
Henry Gray
Karl Marx
Arnold Bennett
Hendrik van Loon
Joshua Slocum
Plato
Adam Smith
Immanuel Kant
Karl Marx and Friedrich Engels
Mara L. Pratt
Oscar Wilde
Thomas Babington Macaulay
Douay-Rheims Version
Stephen Leacock
Saint Ambrose
René Descartes
Dale Carnegie