I think it's dangerous to be optimistic.

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

If you just try to make rational arguments about why people should care about Congo and how 5 million people have died, then people tend not to be receptive. But once you've created a connection of empathy, rational arguments can play a supportive role.

We tie ourselves in knots when we act as if democracy is good for the United States and Israel but not for the Arab world. For far too long, we've treated the Arab world as just an oil field.

Once you've created a connection of empathy, rational arguments can play a supportive role.

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

There could be a powerful international women's rights movement if only philanthropists would donate as much to real women as to paintings and sculptures of women.