Found here. It's sad that these defenses are necessary, but as George Shultz put it, everyone wanted to debate Milton Friedman . . . when Friedman wasn't in the room. Now that Friedman has passed, the number of people volunteering to debate him has increased by massive amounts.

Too bad none of these people were brave enough to do it while he was alive. This alone should tell us something about the quality--or lack thereof--of their arguments. If Friedman were alive and his detractors were brave enough to try to debate him, he surely would have silenced them by alluding to this entirely accurate point.