wettest of dreams. Or perhaps it was only a fleeting, long-forgotten secretion, a lingering gaze misplaced, a furtive whiff of an object redolent with someone you once craved, a wayward click of the mouse, a hypothalamic effervescence that made you tingle down below. Nevertheless, even if you settle on one of these relatively minor examples, each embodies a corporeal reality specific to you … a “shocking,” incontrovertible deed of physiology or an outright commission of lust that you’ve never shared with a single person, maybe not even yourself until now.
Whatever it is, once it’s laid bare for all the world to see in your declassified government report, a faultless testimony in inerasable ink, this unique venereal data point will undoubtedly register in the consciousness of someone, somewhere out there as evidence of your sexual deviance, or perhaps even your criminality. Just look around you or think of all the people you know. In the unforgiving lair of another’s critical eyes, you have now been transformed irreversibly into a filthy, loathsome pervert. And that’s the feeling, this fetid social emotion of shame, that I want you to keep in the back of your mind as you read this book. We’re going to get to the bottom of where it comes from, and we’re going to do our best to smother it with reason in our efforts to stop it from hurting you and others in the future.
This feeling doesn’t just make you a guilty pervert; more important, it makes you a human being. Blue-haired grandmothers, somnambulant schoolteachers, meticulous bankers, and scowling librarians, they’ve felt it too, just like you. We tend not to think of others as sexual entities unless they’ve aroused us somehow, but with the exception of those people spared by certain chromosomal disorders, we’re all innately lewd organisms. That’s easy to grasp in some abstract sense. But try putting it into practice. The next time you’re at the grocery store and the moribund cashier with the underbite and the debilitating bosom sweeps your bananas across the scanner, think of precisely where those uncommonly large hands have been. How many men or women— including her—have those seemingly asexual appendages brought ineffable bliss? This isn’t an exercise in the grotesque; it’s a reminder of your animal humanity. A concupiscent beast has roamed under all skins … even that of the grumpy checkout lady.
Yet the best-kept secret is even bigger than this unspoken universality. It’s this: exploring the outer recesses of desire by using the tools of science is a pinnacle human achievement. It’s not easy, but digging into the darkest corners of our sexual nature (that is to say, our “perversions”) can expose what keeps us from making real moral progress whenever the issues of equality and sexual diversity arise. With each defensive layer we remove, the rats therein will flee at the daylight falling at their feet, and the opportunity to eradicate such a pestilence of fear and ignorance makes the excavation of our species’s lascivious soul worth our getting a little dirty along the way.
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We’re not the first to use the grimier realities of human sexuality to grease our way into some deeper truths. They may not have been scientists, but many artists and writers have touched on related psychological processes that were insightful and even foretold future research directions. In his 1956 play, The Balcony , for example, the French playwright Jean Genet showed how people who are inebriated by desire experience cognitive distortions motivating them to engage in behaviors that in a less aroused state of mind they’d perceive as obscene. Genet’s story revolves around the daily affairs of a busy brothel in a town on the brink of war. Run by an astute madam named Irma, the whorehouse is a sanctuary in which high-profile local officials are free to drain away their carnal excess. Once they’ve done so, they can get on