It is, after all, the responsibility of the expert to operate the familiar and that of the leader to transcend it.

The task of the leader is to get his people from where they are to where they have not been. The public does not fully understand the world into which it is going. Leaders must invoke an alchemy of great vision. Those leaders who do not are ultimately judged failures, even though they may be popular at the moment.

No country can act wisely simultaneously in every part of the globe at every moment of time.

The members of the Islamic Staye have cut the throat of an American on television. This is an insult to the United States, which requires that we demonstrate that this is not an act that is free. I would strongly favor a strong attack on ISIS for a period that is related to the murder of the American.

The real distinction is between those who adapt their purposes to reality and those who seek to mold reality in the light of their purposes.

Ninety percent of the politicians give the other ten percent a bad reputation.

Now we have a whole series of problems - energy, environment, proliferation - which go beyond the nation. And we also know that a conflict between major powers would be a catastrophe for which there is no compensation in anything you can gain.