John Kerry: “We don't have adequate science. We can't do this on a two and three-year basis.”

That hasn't happened sufficiently.

You cannot just sit there anywhere and wish that things are going to be as they have been historically.

I do not think that the choice we make with respect to Africa ought to be just based on what China is doing.

People really do count on America for a lot of things in the world, and I think everyone should be extraordinarily proud of our history of doing things.