There are certain people of whom it is difficult to say anything which will at once throw them into relief—in other words, describe them graphically in their typical characteristics. These are they who are generally known as “commonplace people,” and this class comprises, of course, the immense majority of mankind. Authors, as a rule, attempt to select and portray types rarely met with in their entirety, but these types are nevertheless more real than real life itself.
Therefore, without entering into any more serious examination of the question, I will content myself with remarking that in real life typical characters are “watered down,” so to speak; and all these Dandins and Podkoleosins actually exist among us every day, but in a diluted form.
From The Idiot by Fyodor Dostoyevsky.