Theophrastus to Polycles:

Many a time ere now I have stopped to think and wonder,—I fancy the marvel will never grow less,—why it is that we Greeks are not all one in character, for we have the same climate throughout the country, and our people enjoy the same education. I have studied human nature a long time, my dear Polycles, for I have lived nine and ninety years;[6] I have conversed with many men of divers characters, and have been at great pains to observe both good and bad. I have fancied, therefore, I ought to set down in writing how men live and act. I shall describe their characters, each after its kind, and show you their besetting weaknesses. I dare say, Polycles, our children will be the better, if we leave them memorials of this sort; and as they study these patterns of good[7] and ill, they will elect, I think, to live and hold communion with men of the highest type. In this way they will strive to maintain the level of the highest. I turn now to my task. Yours it is to follow me and see if what I say is true. I begin my book with a description of the Dissembler, omitting any preface and details about the word. And first of all I shall lay down a definition of dissembling, and with this in view shall describe the dissembler in his character and manner of life, exhibiting in such clearness, as I can, his various traits.