“Take advantage of an opportunity when it presents itself, before it passes away. A good opportunity is usually a rare coincidence of various factors, unlikely to be repeated.” (Paczolay, 1997 p. 109),George Farquhar, The Beaux’ Stratagem, Act IV, scene 2; reported as a proverb in Hoyt’s New Cyclopedia Of Practical Quotations (1922), p. 642. Walter Scott, The Fair Maid of Perth, Chapter V. Webster, Westward Ho, III. 2. Geoffrey Chaucer, Troylus and Cresseyde, Book II, Stanza 178.