You have to respect Ron Paul in that he is principled. A key moral principle is that if an action is wrong for others it's wrong for us. Ron Paul understands that and so he recognizes that various US invasions on the basis of perceived threats are wrong. He talks about the enormous human costs of our invasions. He asks us to think about how we'd feel if it was done to us.
I had a big Ron Paul sign in my yard in 2008. Still have the sign in fact. But I won't be putting it up this time. As much as I respect him and agree with him on many issues, he's just wrong economically.
Paul Krugman has been noting this recently. Paul's models have simply failed. People of the Austrian school of economics made some really bold predictions. They've just been dead wrong. That matters.
Today Paul Krugman has some similar erroneous claims from Peter Schiff from back in 2009. Schiff is a huge Ron Paul fan. I was likewise a fan of Schiff. I knew about how he was predicting a crash and being called a moron for it. Watch how accurate he is compared to Ben Stein. So yeah, he looked to be someone that understood what was going on. But even in that popular video you can see hints of how he's wrong. He's expecting a dollar crash. That hasn't happened.
On the other hand when you look to Krugman you see that he likewise saw the downturn coming due to the housing bubble and additionally let it be known that he expected the dollar to be strong. He also expected the downturn to be prolonged because there was on net no stimulus (you hear that Obama passed stimulus, but this wasn't enough to offset reductions in state revenue, hence no stimulus on net).
On a similar note, here's an interesting article regarding Friedrich Hayek. Similarly wrong about the Great Depression like Paul and Schiff are now.