William Shakespeare
Bertrand Russell
Sir Francis Bacon
Alessandro Manzoni
Louis Pasteur
Thomas Carlyle
Oscar Wilde
Aristóteles
Jorge Luis Borges
René Descartes
Miguel de Unamuno
Proverbio griego
Benjamin Franklin
Refrán
Camilo José Cela
Francis Scott Fitzgerald
Blaise Pascal
Henry F. Amiel
Henry-Louis Mencken
Ambrose Bierce
Dante Alighieri
Thomas Stearns Eliot