From the New York Times:

http://www.nytimes.com/2007/12/18/science/18law.html?_r=1&oref=slogin

“Gravity,” goes the slogan on posters and bumper stickers. “It isn’t just a good idea. It’s the law.”

And what a law. Unlike, say, traffic or drug laws, you don’t have a choice about obeying gravity or any of the other laws of physics. Jump and you will come back down. Faith or good intentions have nothing to do with it.

Existence didn’t have to be that way, as Einstein reminded us when he said, “The most incomprehensible thing about the universe is that it is comprehensible.” Against all the odds, we can send e-mail to Sri Lanka, thread spacecraft through the rings of Saturn, take a pill to chase the inky tendrils of depression, bake a turkey or a soufflé and bury a jump shot from the corner.

Yes, it’s a lawful universe. But what kind of laws are these, anyway, that might be inscribed on a T-shirt but apparently not on any stone tablet that we have ever been able to find?