[节选] Helen Fisher: Why we love, why we cheat
...But these three brain systems: lust, romantic love and attachment, aren't always connected to each other. You can feel deep attachment to a long-term partner while you feel intense romantic love for somebody else, while you feel the sex drive for people unrelated to these other partners. In short, we're capable of loving more than one person at a time. In fact, you can lie in bed at night and swing from deep feelings of attachment for one person to deep feelings of romantic love for somebody else. It's as if there's a committee meeting going on in your head as you are trying to decide what to do. So I don't think, honestly, we're an animal that was built to be happy; we are an animal that was built to reproduce. I think the happiness we find, we make. And I think, however, we can make good relationships with each other.
...I've got nothing against people who take them short term, when they're going through something perfectly horrible. They want to commit suicide or kill somebody else. I would recommend it. But more and more people in the United States are taking them long term. And indeed, what these drugs do is raise levels of serotonin. And by raising levels of serotonin, you suppress the dopamine circuit. Everybody knows that. Dopamine is associated with romantic love. Not only do they suppress the dopamine circuit, but they kill the sex drive. And when you kill the sex drive, you kill orgasm. And when you kill orgasm, you kill that flood of drugs associated with attachment. The things are connected in the brain. And when you tamper with one brain system, you're going to tamper with another. I'm just simply saying that a world without love is a deadly place.
...I've got nothing against people who take them short term, when they're going through something perfectly horrible. They want to commit suicide or kill somebody else. I would recommend it. But more and more people in the United States are taking them long term. And indeed, what these drugs do is raise levels of serotonin. And by raising levels of serotonin, you suppress the dopamine circuit. Everybody knows that. Dopamine is associated with romantic love. Not only do they suppress the dopamine circuit, but they kill the sex drive. And when you kill the sex drive, you kill orgasm. And when you kill orgasm, you kill that flood of drugs associated with attachment. The things are connected in the brain. And when you tamper with one brain system, you're going to tamper with another. I'm just simply saying that a world without love is a deadly place.
