When romances do really teach anything, or produce any effective operation, it is usually through a far more subtle process than the ostensible one. The author has considered it hardly worth his while, therefore, relentlessly to impale the story with its moral as with an iron rod-or, rather, as by sticking a pin through a butterfly-thus at once depriving it of life, and causing it to stiffen in an ungainly and unnatural attitude.

The Complete Writings of Nathaniel Hawthorne: The house of seven gables (ed. 1900)