Somebody actually said that I'm the only entity on earth, other than rogue states, that has received an apology from the White House.

Great leaders are willing to retire unloved and unpopular as the price for great exertion.

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.

Science has everything to say about what is possible. Science has nothing to say about what is permissible.

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

I am not religious. I do not believe that personhood is conferred upon conception. But I also do not believe that a human embryo is the moral equivalent of a hangnail and deserves no more respect than an appendix.

There's a reason why in New York Harbor we have the Statue of Liberty, not the Statue of Equality.