"Power, like love, is easier to experience than to define or measure."

“Cooperation is difficult in the absence of communication.”

“The international system consists not only of states. The international political system is the pattern of relationships among the states.”

“Some observers feel it is harder to change public opinion in democracies than it is to change policies in totalitarian countries.”

“Humans sometimes make surprising choices, and human history is full of uncertainties.”

“Any sense of global community is weak.”

“Governments now have to share the stage with actors who can use information to enhance their soft power and press governments directly, or indirectly by mobilizing their publics.”