I distrust all multiculturalism, liberal or conservative. The Balkans amply demonstrate the perils of Balkanization.

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.

Every new president flatters himself that he, kinder and gentler, is beginning the world anew. Yet, when Barack Obama in his inaugural address reached out to Muslims by saying, 'To the Muslim world, we seek a new way forward, based on mutual interest and mutual respect,' his formulation was needlessly defensive and apologetic.

There's no free lunch. If you want an industrial economy, you need energy. If you want energy, it will produce pollution. You can have it in two forms. You can have it dissipated in the atmosphere - like carbon dioxide - which then you cannot recover, or you can have the waste concentrated in one small space like nuclear. That is far easier to deal with. The idea that you can be able to create renewable energy at a price anywhere near the current price for oil or gas or coal is a fantasy.

Passing a law like the assault weapons ban is a symbolic - purely symbolic - move in that direction. Its only real justification is not to reduce crime but to desensitize the public to the regulation of weapons in preparation for their ultimate confiscation.

Every two years the American politics industry fills the airwaves with the most virulent, scurrilous, wall-to-wall character assassination of nearly every political practitioner in the country - and then declares itself puzzled that America has lost trust in its politicians.

I'm not against international institutions that would try to tackle global warming. But the way to go, at least in the short run, is to go to nuclear power. It's amazing to me that people who are so alarmed about global warming are so reluctant to adopt the obvious short-term solution - the bridge until the day when we have affordable renewable energy - of nuclear power.