General Philosophies and Objective Truth

No, this isn't a lecture on postmodernism, just a query: is it possible that supporters of the President may hate liberals just as much as liberals hate the President, and make as little sense in their attacks?

"Liberals don't mind being wrong about an issue, but any error must comport with their general philosophy, which opposes the concept of objective truth. So, if they are wrong about the economy, it is because government isn't big enough and doesn't spend enough, or taxes too little."'
--Cal Thomas, "Nihilistic Liberals Hate President Because He Has a Belief System," Aug. 31, 2004

So general philosophies are bad, but objective truths are good? Liberals like being wrong? I don't get it. Cal Thomas is supposedly the most syndicated columnist in America. And he's also got to be the worst.