Fathers and sons show much more consideration towards one another than mothers and daughters do.
(Friedrich Nietzsche (1844-1900), German philosopher, classical scholar, critic of culture. Friedrich Nietzsche, Sämtliche Werke: Kritische Studienausgabe, vol. 3, p. 510, eds. Giorgio Colli and Mazzino Montinari, Berlin, de Gruyter (1980). The Gay Science, first edition, "Third Book," aphorism 221, "Consideration," (1882).)
Indifference is commonly the mother of discretion.
(Philip Dormer Stanhope, 4th Earl Chesterfield (1694-1773), British statesman, man of letters. letter, Sept. 1749, The French Correspondence of the 4th Earl of Chesterfield, vol. I, p. 65, ed. Rex A. Barrell, trans. James Gray, Ottawa, Borealis Press (1980) I. 65.)