I don't like politicians who vacillate.

Global warming threatens our health, our economy, our natural resources, and our children's future. It is clear we must act.

Mitt Romney's primary season embrace of the social and economic agenda of the more rabid elements of his party doomed him, especially the shrill immigration rhetoric and the harshly insensitive theory that no additional sacrifice or contribution should be sought from those at the top.

I don't have any particular expertise-I've never been a banker or an investment banker. But I did see an evolution in the system that I thought was problematic.

As one who was a prosecutor for many years, I can tell you that having a tape recording of interrogations would help everybody. It would make clear if there had been improper pressure exerted on a defendant or witness, and it would also protect the interrogating officer from false claims that such pressure had been brought to bear.

Our criminal justice system is fallible. We know it, even though we don't like to admit it. It is fallible despite the best efforts of most within it to do justice. And this fallibility is, at the end of the day, the most compelling, persuasive, and winning argument against a death penalty.

Don't reward bad behavior. It is one of the first rules of parenting. During the financial cataclysm of 2008, we said it differently. When we bailed out banks that had created their own misfortune, we called it a 'moral hazard,' because the bailout absolved the bank's bad acts and created an incentive for it to make the same bad loans again.