When politicians lie because it helps win an election it gets harder to remember what it's like to tell the truth

Paul Krugman in today's New York Times was writing about America's Republicans but the view strikes me as being applicable to a broad spectrum of Australian politics.

A key moment came in the 1970s, when Irving Kristol, the godfather of neoconservatism, embraced supply-side economics — the claim, refuted by all available evidence and experience, that tax cuts pay for themselves by boosting economic growth. Writing years later, he actually boasted about valuing political expediency over intellectual integrity: “I was not certain of its economic merits but quickly saw its political possibilities.” In another essay, he cheerfully conceded to having had a “cavalier attitude toward the budget deficit,” because it was all about creating a Republican majority — so “political effectiveness was the priority, not the accounting deficiencies of government.”

The problem is that once you accept the principle that it’s O.K. to lie if it helps you win elections, it gets ever harder to limit the extent of the lying — or even to remember what it’s like to seek the truth.