Isn't it time to talk not only about weather, but also about climate?

I think that [Donald] Trump is frankly a bigot. He has a racist history.

All of a sudden their husband's dead and maybe a child is dead and they have absolutely nothing - and they're heading through the desert at night.

If one is talking to a finance minister of a poor country, moral arguments tend not to get very far. But if you can argue that their country is going to grow 2 percent faster per year if they can just harness the power of the female half of the population more effectively, that is an argument they consider.

Our nearly century-long experiment in banning marijuana has failed as abysmally as Prohibition did... In contrast, legalizing and taxing marijuana would bring in substantial sums that could be used to pay for schools, libraries or early childhood education.

There seems to be this sense among even well-meaning Americans that Africa is this black hole of murder and mutilation that can never be fixed, no matter what aid is brought in.

...Environmental groups are too often alarmists. They have an awful track record, so they've lost credibility with the public.