The Post-Modern Presidency: Fine Washington Monthly article by Joshua Marshall about the "revisionist mindset" at the heart of the Bush Administration, out of which has arisen the President's very unique contribution to the fine art of mendacity:

Everyone is compromised by bias, agendas, and ideology. But at the heart of the revisionist mindset is the belief that there is really nothing more than that. Ideology isn't just the prism through which we see world, or a pervasive tilt in the way a person understands a given set of facts. Ideology is really all there is. For an administration that has been awfully hard on the French, that mindset is...well, rather French. They are like deconstructionists and post-modernists who say that everything is political or that everything is ideology. That mindset makes it easy to ignore the facts or brush them aside because "the facts" aren't really facts, at least not as most of us understand them. If they come from people who don't agree with you, they're just the other side's argument dressed up in a mantle of facticity. And if that's all the facts are, it's really not so difficult to go out and find a new set of them.