There's so many different worlds, so many different suns. And we have just one world, but we live in different ones.

But I said that you could still want something that is very unlikely to happen.

An inglorious peace is better than a dishonorable war

Is that the terrorists? ... War of the Worlds.

If we cannot end now our differences, at least we can help make the world safe for diversity.

[Commencement Address at American University, June 10 1963]

I don't know whether your heart ever necessarily changes, but time changes the way that you perceive the world. And you just hope it gives you more empathy and all those other things.