The Imp of the Perverse is a metaphor for the common tendency, particularly among children and miscreants, to do exactly the wrong thing in a given situation. The conceit is that the misbehavior is due to an imp (a small demon) leading an otherwise decent person into mischief. The phrase has a long history in literature, and was popularized (and perhaps coined) by Edgar Allan Poe in his short story, "The Imp of the Perverse".

We have a task before us which must be speedily performed. We know that it will be ruinous to make delay. The most important crisis of our life calls, trumpet-tongued, for immediate energy and action. ... It must, it shall be undertaken to-day, and yet we put it off until to-morrow, and why? There is no answer, except that we feel perverse, using the word with no comprehension of the principle. ... [Then] The clock strikes, and is the knell of our welfare. At the same time, it is the chanticleer-note to the ghost that has so long overawed us. It flies - it disappears - we are free. The old energy returns. We will labor now. Alas, it is too late! [1]

This same impulse is the sole motivation for the killing of the cat in Poe's short story, "The Black Cat". The Imp of the Perverse is also masterfully exemplified in The Bad Glazier, a prose poem by Baudelaire. The concept also figures prominently in the motives of Jack Shaftoe, a swashbuckling protagonist in Neal Stephenson's trilogy The Baroque Cycle:

But here was a rare opportunity for stupidity even more flagrant and glorious.

Now, Bob, who'd been observing Jack carefully for many years, had observed that when these moments arrived, Jack was almost invariably possessed by something that Bob had heard about in Church called the Imp of the Perverse. Bob was convinced that the Imp of the Perverse rode invisibly on Jack's shoulder whispering bad ideas into his ear, and that the only counterbalance was Bob himself, standing alongsides counseling good sense, prudence, caution, and other Puritan virtues.

But Bob was in England.

-- from Quicksilver

See also

Shoulder angel

External links

The Imp of the Perverse by Edgar Allan Poe