A diamond is a chunk of coal that is made good under pressure.

You should not go to war for the privilege of withdrawal. You need to define your objective and the outcome, and it cannot be the removal of one man.

The absence of alternatives clears the mind marvelously.

Any international system must have two key elements for it to work. One, it has to have a certain equilibrium of power that makes overthrowing the system difficult and costly. Secondly, it has to have a sense of legitimacy.

I do not stand on protocol. If you just call me Excellency, it will be okay.

Donald Trump is a phenomenon that foreign countries haven't seen.

Superstars strive for approbation; heroes walk alone. Superstars crave consensus; heroes define themselves by the judgment of a future they see it as their task to bring about. Superstars seek success in a technique for eliciting support; heroes pursue success as the outgrowth of inner values.