Ron Paul is turning 90 this month. One of the most influential political figures of his time, Paul has meant many things to many people. Here’s at least a part of what he’s meant to me. When I was 20 years old, I supported Pat Buchanan for president. A southerner living in Boston, I was there for his 1996 Lexington battlefield campaign rally where Buchanan jeered at student protesters. “Come on, children, stop it or I’ll take away your Pell grants.” It was also exciting to see Buchanan on the covers of TIME and Newsweek, and to be living next...