I was having dinner with someone the other evening who commented that there were many people who didn't seem talented or industrious when he knew them, years ago, but somehow they had now ended up making large amounts of money.
Here's my take on this. It's either a proof of the fact that God doesn't exist (how could he possibly let this happen!?) or, more likely, a proof of the fact that he does exist and that he wants you to be humble.
That's by Emanuel Derman up at Wilmott.