The state is a creation of nature and man is by nature a political animal.
(Aristotle (384-323 B.C.), Greek philosopher. Politics 1.2; 1253a2-3, The Complete Works of Aristotle, trans. by Jowett, ed. Jonathan Barnes, Princeton, Princeton University Press (1985).)
Men are by nature merely indifferent to one another; but women are by nature enemies.
(Arthur Schopenhauer (1788-1860), German philosopher. Originally published in Parerga and Paralipomena, vol. 2 (1851). "On Women," Essays and Aphorisms, Penguin (1970).)
No man is by nature the property of another. The defendant is, therefore, by nature free.
(Samuel Johnson (1709-1784), British author, lexicographer. (Originally published 1791). Boswell's Life of Johnson, September 23, 1777, p. 878, Oxford University Press (1980).
Comment on legal case concerning a Jamaican slave.)
(Gérard De Nerval (1808-1855), French novelist, poet. repr. In Selected Writings, ed. and trans. by Geoffrey Wagner (1958). Vers Dorés, L'Artiste (Paris, March 16, 1845) under the title "Pensée Antique.")