Two decades ago, however, socialism and communism died rudely, then were buried forever by the empirical demonstration of the superiority of market capitalism everywhere from Thatcher's England to Deng's China, where just the partial abolition of socialism lifted more people out of poverty more rapidly than ever in human history.

When a party is in opposition, it opposes. That's its job. But when it comes to power, it must govern. Easy rhetoric is over, the press of reality becomes irresistible. By necessity, it adopts some of the policies it had once denounced. And a new national consensus is born.

Identity politics is the mother's milk of the Democratic Left.

I think if you're going to master policy, especially world affairs, you've got to know history.

If you believe that health care is a public good to be guaranteed by the state, then a single-payer system is the next best alternative. Unfortunately, it is fiscally unsustainable without rationing.

I think the editorial page of the Washington Post is the best in the country. I think the editorials - considering it's a liberal town, liberal constituency and from the liberal tradition - I think it's the best editorial page around. It's quite balanced.

Obama's Democrats have become the part of no. Real cuts to federal budget? No. Entitlement reform? No. Tax reform? No. Breaking the corrupt and fiscally unsustainable symbiosis between public-sector unions and state governments? Hell no.