The anniversary of Hiroshima, should be a day of somber reflection, not only on the terrible events of that day in 1945, but also on what they revealed: that humans, in their dedicated quest to extend their capacities for destruction, had finally found a way to approach the ultimate limit.

Stability is when the U.K. and U.S. invade a country and impose the regime of their choice.

I don't think that experience is a very useful or convincing attribute for a sensible foreign policy. Henry Kissinger had a lot of experience.

If the mutation is partially transmitted to offspring, they too would have the advantage. And over time it might have come to dominate a small breeding group.

I had no expectations about Barack Obama and I'm not in the least disillusioned.

To speak truth to power is not a particularly honorable vocation. One should seek out an audience that matters - and furthermore (another important qualification), it should not be seen as an audience, but as a community of common concern in which one hopes to participate constructively.

It is a privilege to join the campaign to support Bradley Manning for his courage and integrity in serving his country by helping make the government accountable to its citizens, and to inform the world of what its people should know.