Paul Krugman:
Macroeconomic Morality: [C]ontrary to what some people may think, I don’t regard anyone who disagrees with me as necessarily a mendacious idiot. Economics is hard, and people will disagree. Sometimes people will give advice with the best of intentions that turns out, in hindsight, to have been disastrous; that’s a tragedy but not a sin.
But here’s what is indeed a sin: choosing your position based on what is personally convenient.
I may make jokes along the way – I kind of need to in order to stay sane – but the stuff I write about is extremely serious; there’s a vast human tragedy taking place, and anyone who has the ear of the public has a duty to make a good-faith effort to get it as right as he can....
I like to think that I have enough integrity to change my views when it becomes clear that they were wrong. Maybe, maybe not — although it’s probably worth pointing out that I didn’t believe in the liquidity trap and was pretty down on old-fashioned Keynesianism until 1998, when a hard look at Japan and an attempt to understand what was happening there led me to change my mind. Anyway, I try, because the ideas of economists and political philosophers matter.
And too many people aren’t trying, which is, as I said, a sin.
