What Makes Us Moral

Ever wonder what the hell is wrong with humans?
(Thanks, Mefi.)

If the entire human species were a single individual, that person would long ago have been declared mad. The insanity would not lie in the anger and darkness of the human mind—though it can be a black and raging place indeed. And it certainly wouldn’t lie in the transcendent goodness of that mind—one so sublime, we fold it into a larger “soul.” The madness would lie instead in the fact that both of those qualities, the savage and the splendid, can exist in one creature, one person, often in one instant.
We’re a species that is capable of almost dumbfounding kindness. We nurse one another, romance one another, weep for one another. Ever since science taught us how, we willingly tear the very organs from our bodies and give them to one another. And at the same time, we slaughter one another. The past 15 years of human history are the temporal equivalent of those subatomic particles that are created in accelerators and vanish in a trillionth of a second, but in that fleeting instant, we’ve visited untold horrors on ourselves—in Mogadishu, Rwanda, Chechnya, Darfur, Beslan, Baghdad, Pakistan, London, Madrid, Lebanon, Israel, New York City, Abu Ghraib, Oklahoma City, an Amish schoolhouse in Pennsylvania—all of the crimes committed by the highest, wisest, most principled species the planet has produced. That we’re also the lowest, cruelest, most blood-drenched species is our shame—and our paradox.

What Makes Us Moral – A to Z Health Guide 2007 – TIME
And a morality quiz…

An out of control trolley is heading down a track toward five unsuspecting people and will surely kill them all. You could throw a switch diverting it to a siding, but an equally unsuspecting man is standing there and the train will kill him instead. Could you throw the switch, killing one to save five?

The Morality Quiz