Liberalism is a hell of a drug

I find it hard to believe that this is the first time Harvard economics professor Greg Mankiw has read something by Paul Krugman.  The naivete of this statement is stunning; he must be reiterating what everybody already knows:

Paul seems to take the position that unless you agree with him about the tax bill, you are unprincipled. In the world as I see it, reasonable people can disagree, and progress is best made when people do not question the moral rectitude of others simply because they hold different opinions.

Here's a reminder that the New York Times ombudsman found that Krugman shades the truth:

Op-Ed columnist Paul Krugman has the disturbing habit of shaping, slicing and selectively citing numbers in a fashion that pleases his acolytes but leaves him open to substantive assaults.

Well, his mindset is that he has his opinion and you're wrong.  Must be fun at parties.