Where did Isaac Asimov (who didn't take kindly to mispellings of his name, btw) say that? I have his
Guide to Earth and Space and I don't see that quote; it doesn't sound like the way he'd put it.
But to be fair, the quote isn't off the mark. The entropy of the universe is increasing. But if you try to use this fact to disprove evolution you'll lose. It is not necessary that the entropy of the
earth increase in order for the 2nd law to hold, because earth is not a closed system.