Sec. IX. What man then is so industrious, so changeable, and so versatile, as to be able to make himself like and adapt himself to many different persons, and not to laugh at the advice of Theognis, "Imitate the ingenuity of the polypus, that takes the colour of whatever stone it sticks to."[345] And yet the changes in the polypus do not go deep but are only on the surface, which, from its thickness or thinness takes the impression of everything that approaches it, whereas friends endeavour to be like one another in character, and feeling, and language, and pursuits, and disposition. It requires a not very fortunate or very good Proteus,[346] able by jugglery to assume various forms, to be frequently at the same time a student with the learned, and ready to try a fall with wrestlers, or to go a hunting with people fond of the chase, or to get drunk with tipplers, or to go a canvassing with politicians, having no fixed character of his own.[347] And as the natural philosophers say of unformed and colourless matter when subjected to external change, that it is now fire, now water, now air, now solid earth, so the soul suitable for many friendships must be impressionable, and versatile, and pliant, and changeable. But friendship requires a steady constant and unchangeable character, a person that is uniform in his intimacy. And so a constant friend is a thing rare and hard to find. [321] Plato, "Men." p. 71 E. [322] Quoted more fully by our author, "De Fraterno Amore," Sec. iii. [323] "Eadem comparatione utitur Lucianus in Toxari T. ii. p. 351: [Greek: hostis an polyphilos he homoios hemin dokei tais koinais tautais kai moicheuomenais gynaixi; kai oiometh' ouketh' homoios ischyran ten philian autou einai pros pollas eunoias diairetheisan]."--_Wyttenbach._ [324] From the "Hypsipyle" of Euripides. [325] A well-known proverb for beginning at the beginning. Aristophanes, "Vespae." 846; Plato, "Euthryphro," 3 A; Strabo, 9. [326] An allusion to the well-known proverb, [Greek: koloios poti koloion]. See Erasmus, "Adagia," p. 1644. [327] The paronomasia is on [Greek: hetairos, heteros]. [328] "Iliad," ix. 482; "Odyssey," xvi. 19. [329] Cf. Cicero, "De Amicitia," xix. [330] Sophocles, Fragm. 741. Quoted again by our author, "On Love," Sec. xxiii. [331] For the image compare Lucio's speech, Shakspere, "Measure for Measure," A. iv. Sc. iii. 189, 190: "Nay, friar, I am a kind of burr; I shall stick." [332] "Iliad," xxiii. 77, 78. [333] "Odyssey," iv. 178-180. [334] "Iliad," v. 902, altered somewhat. [335] Bergk. p. 1344^3. [336] Sophocles, "Oedipus Tyrannus," 4, 5. Quoted again "On Moral Virtue," Sec. vi. [337] A line from Menander. Quoted again "De Fraterno Amore," Sec. xx. [338] Reading with Halm and Hercher [Greek: en toi pollois philois chresthai.]