Once the Xerox copier was invented, private diplomacy died. There's no such thing as secrecy. It's just a question of whether it's leaked or revealed openly.

What Iran wants and what North Korea wants is respect.

He [Martin Luther King Jr.] always used to say you have no choice about being born or dying. The only thing you have a choice about is what you die for.

Both the brightness and the spectrum of the X-rays are very different from what theory predicts.

Martin Luther King was talking about racism, war and poverty. I think we have made progress enormous progress in racism and war, but we have made little or no progress in poverty. And it's because the economy has gotten more and more complex as we have globalized.

There's no problem on the planet that can't be solved without violence. That's the lesson of the civil rights movement.

Beauty and love are all my dream; They change not with the changing day; Love stays forever like a stream That flows but never flows away.