The man who likely has done more than anyone to put the libertarian philosophy of freedom and small government on the political agenda probably will make another run for the presidency: U.S. Rep. Ron Paul. Paul is always upbeat, but lately he's had more reason to be, as he sees libertarian ideas bubbling up from the grass roots. "People outside of Washington are waking up," he told me, "and they're getting the attention of a few in Washington." Paul has been in Congress more than 20 years, and much of that time he's played a lonely role, often being the...