Aesop
Sun Tzu
Henry David Thoreau
Frances Hodgson Burnett
Various
Friedrich Nietzsche
Ayn Rand
Anicius Manlius Severinus Boethius
Aristotle
Oscar Wilde
James Allen
Marcus Aurelius
Confucius
Walt Whitman
Niccolò Machiavelli
Karl Marx
Arnold Bennett
Plato
Joel Chandler Harris
Immanuel Kant
Karl Marx and Friedrich Engels
Sir Edwin Arnold (Translator)
Fyodor Dostoyevsky
René Descartes
Saint Augustine of Hippo
Thomas Paine
Alexis de Tocqueville
Bertrand Russell
Sir Thomas More
Leo Tolstoy
Jean-Jacques Rousseau
Bernard of Clairvaux
Patrick Henry
Laozi
Saint Thomas Aquinas
Arthur Schopenhauer
Abraham Lincoln
Ralph Waldo Emerson
Alfred Binet
William George Jordan
Thomas Hobbes
John Stuart Mill