The difference between science and religion is that scientists argue about what the evidence shows to be true, mentioning individuals who came up with theories as a courtesy to give great thinkers their due; while religionists argue about what the great thinkers said, on the assumption that the words of the greats are of far more import than mere evidence.
Who gives a shit what Keynes did or did not say? Whether or not taxing the rich is a good idea to get out of recession has exactly fuck all to do with whether or not Keynes said it was.
You guys sound like a bunch of creationists arguing about whether Darwin recanted evolution on his deathbed - as though that would somehow change the factuality of the Theory of Evolution.
Do you want economics to be the dismal science, or are you happier with keeping it as the dismal religion?