The simple fact is that there is a limited amount of water on the planet, and we cannot afford to be negligent in its use. We cannot keep treating it as if it will never run out.

You cannot apply your high standards to a country [Egypt] burdened with decades of autocratic rule. Our democracy is still in its infancy.

If you bet on individuals, instead of the people, you are going to fail.

I think one country with nuclear weapons is one country too many.

As long as some of us choose to rely on nuclear weapons, we continue to risk that these same weapons will become increasingly attractive to others.

Discipline is part of my professional training as a lawyer.

My conscience does not permit me to run for the presidency or any other official position unless it is within a democratic framework.