Adam was but human—this explains it all. He did not want the apple for the apple's sake, he wanted it only because it was forbidden. The mistake was in not forbidding the serpent; then he would have eaten the serpent.
—Mark Twain, Pudd'nhead Wilson's Calendar
We are ever striving after what is forbidden, and coveting what is denied us.
"When I read the warning label on the gun that read "Please do not shoot at people," I immediately wanted to start shooting at people. Why did I do something that people shouldn't do? That itself explained how primitive and childish I was at the time."
—Keiichi, telling his friends how he got started shooting little girls with his bb gun, Higurashi no Naku Koro ni
Forbidden, pp. Invested with a new and irresistable charm.
— Ambrose Bierce, from his 'Devil's Dictionary'
"I'm not sure that the best way to make a boy love the English poets might not be to forbid him to read them and then give him plenty of time to disobey you."
"The more you want to hide it, the more I want to see it."
—So many parents.
If you really read the fairy tales, you will observe that one idea runs from one end of them to the other—the idea that peace and happiness can only exist on some condition. This idea, which is the core of ethics, is the core of the nursery-tales. The whole happiness of fairyland hangs upon a thread, upon one thread. Cinderella may have a dress woven on supernatural looms and blazing with unearthly brilliance; but she must be back when the clock strikes twelve. The king may invite fairies to the christening, but he must invite all the fairies or frightful results will follow. Bluebeard’s wife may open all doors but one. A promise is broken to a cat, and the whole world goes wrong. A promise is broken to a yellow dwarf, and the whole world goes wrong. A girl may be the bride of the God of Love himself if she never tries to see him; she sees him, and he vanishes away. A girl is given a box on condition she does not open it; she opens it, and all the evils of this world rush out at her. A man and woman are put in a garden on condition that they do not eat one fruit: they eat it, and lose their joy in all the fruits of the earth.
—G. K. Chesterton, "Fairy Tales"