It's an improvisation on a theme. You know where you want to go, but you don't know how to get there. It's not linear.

World War I was not inevitable, as many historians say. It could have been avoided, and it was a diplomatically botched negotiation.

If a country denies it has AIDS, that country will inevitably become an even greater victim.

A peace deal requires agreements, and you don't make agreements with your friends, you make agreements with your enemies.

A world without the United Nations or with a paralyzed United Nations would be far more costly to all of us and far more dangerous to peace and stability.

I still believe in the possibility of the United States, with all its will and all its strength, and I don't just mean military, persevering against any challenge. I still believe in that.

Know something about something. Don’t just present your wonderful self to the world. Constantly amass knowledge and offer it around.