After endless days of commuting on the freeway to an antiseptic, sealed-window office, there is a great urge to backpack in the woods and build a fire.

Loyalty to the President is great, but loyalty to truth, integrity, and country is even better.

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.

Where there is a confluence of interests among nations, as, for example the swine flu or polio, you can get well functioning international institutions like the World Health Organization. And you can act. Climate change is different, because the science remains hypothetical and the potential costs staggering.

The war is not going well and it is time to say why. It has been fought with half-measures. It has been fought with an eye on the wishes of our "coalition partners." It has been fought to assuage the Arab "street." It has been fought to satisfy the diplomats rather than the generals... Why have we not loosed the B-52s and the B-2s to carpet-bomb Taliban positions? And why are we giving the Taliban sanctuary in their cities? We could drop leaflets giving civilians 48 hours to evacuate, after which the cities become legitimate military targets.

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.

There are cycles in American politics. US cycles are even more pronounced because we Americans have a totally entrepreneurial presidential system. We don't have parliamentary opposition parties with a shadow prime minister and shadow cabinets. Every four years, the opposition reinvents itself.