Italy
Virgil. Aenē̆is [Aeneid]. 19 BC, bk. 10.
Virgil. The Aeneid, translated by Robert Fagles. Penguin Classics, 2010, bk. 10.
Sextus Propertius. Elegies. c. 24 BC, bk. 2.
Sextus Propertius. Elegies, edited and translated by G. P. Goold. Harvard University Press, 1990, bk. 2.
Horace. Carmina [Odes]. 23 BC, bk. 1, no. 11.
Horace. "Odes." The Complete Odes and Epodes, translated by David West. Oxford University Press, 2008, bk. 1, no. 11.
Alighieri, Dante. "Inferno [Hell]." La Comedia di Dante Alleghieri [The Divine Comedy by Dante Alighieri]. Foligno: Johann Numeister and Evangelista Angelini da Trevi, 1472.
Alighieri, Dante. "Inferno." The Divine Comedy, edited by David H. Higgins, translated by C. H. Sisson. Oxford University Press, 2008.
Caesar, Julius. Quoted in "Julius Caesar." Parallel Lives by Plutarch. c. 2nd century BC, ch. 50, sect. 2.
Caesar, Julius. Quoted in "Julius Caesar." Parallel Lives by Plutarch. Oxford University Press, 2009, ch. 50, sect. 2.
Virgil. Eclogae [Eclogues]. c. 30 BC, no. 10.
Virgil. "The Eclogues." The Eclogues and The Georgics, translated by C. Day Lewis. Oxford University Press, 2009, no. 10.
Cicero, Marcus Tullius. Pro Milone [In Defense of Milo]. c. 52 BC, sect. 32.
Cicero, Marcus Tullius. Pro Milone [For Milo], translated by D. H. Berry. Oxford University Press, 2009, sect. 32.
Machiavelli, Niccolò. Il Principe [The Prince]. Rome: Antonio Blado d'Asola, 1532.
Machiavelli, Nicolò. The Prince, translated by Peter Bondanella. Oxford University Press, 2005.
Alighieri, Dante. "Inferno [Hell]." La Comedia di Dante Alleghieri [The Divine Comedy by Dante Alighieri]. Foligno: Johann Numeister and Evangelista Angelini da Trevi, 1472.
Alighieri, Dante. "Inferno." The Divine Comedy, edited by David H. Higgins, translated by C. H. Sisson. Oxford University Press, 2008.
Aurelius, Marcus. Meditations. c. 180, bk. 6.
Aurelius, Marcus. Meditations, edited and translated by Martin Hammond. Penguin Classics, 2015, bk. 6.
Lucius Cassius Longinus Ravilla
Quoted in Pro Milone, by Cicero
Cicero, Marcus Tullius. "Pro Roscio Amerino [In defense of Sextus Roscius of Amerina]." 80 BC, Umbria, Italy.
Alighieri, Dante. "Inferno [Hell]." La Comedia di Dante Alleghieri [The Divine Comedy by Dante Alighieri]. Foligno: Johann Numeister and Evangelista Angelini da Trevi, 1472.
Alighieri, Dante. "Inferno." The Divine Comedy, edited by David H. Higgins, translated by C. H. Sisson. Oxford University Press, 2008.
Saint Thomas Aquinus. Summa Theologica. c. 1274, pt. 1.
Saint Thomas Aquinus. The Summa Theologica of St. Thomas Aquinas, translated by Fathers of the English Dominican Provinc. Christian Classics, 1981, pt. 1.
Archimedes. Quoted in History of the World, written by Diodorus Siculus. c. 20 BC.
Archimedes. Quoted in Diodorus Siculus: Library of History, Volume IX, Books 18-19.65. Harvard University Press, 1947.
Ovid. Metamorphōsēs [Metamorphoses]. c. 8 CE, bk. 15, l. 234.
Ovid. Metamorphoses, translated by David Raeburn. Penguin Classics, 2004, bk. 15, l. 234.
Juvenal. Satirae [Satires]. c. 127, satire 10.
Juvenal. The Satires, translated by Niall Rudd. Oxford University Press, 2008, satire 10.
Juvenal. Satirae [Satires]. c. 127, satire 10.
Juvenal. The Satires, translated by Niall Rudd. Oxford University Press, 2008, satire 10.
Archimedes. Stated this after stepping into a bath and noticed that the water level rose. c. 212 BC.
Archimedes. Quoted in Vitruvius: The Ten Books on Architecture by Vitruvius, translated by Morris Hicky Morgan. Dover Publications, 1960.
Aurelius, Marcus. Meditations. c. 180, bk. 4.
Aurelius, Marcus. Meditations, edited and translated by Martin Hammond. Penguin Classics, 2015, bk. 4.
Dante. La Vita Nuova [The New Life]. 1294, ch. 1.
Dante. Vita Nuova, translated by Mark Musa. Oxford University, 2008, ch. 1.