"Every civilization that has ever existed has ultimately collapsed... History is a tale of efforts that failed, of aspirations that weren’t realized.... So, as a historian, one has to live with a sense of the inevitability of tragedy."

“Both countries consider themselves exceptional. The United States believes that our exceptionalism entitles us to educate others because if they adopt our principles, the world will be more peaceful. The Chinese do not strive for conversion. In their view, if you do not belong to Chinese culture, you can never become fully Chinese. Thus, they feel America has no moral right to intervene in their domestic affairs. Their analogy to conversion is that the majesty of their performance will so awe other societies that they will follow enough of the Chinese pattern to become cultural and political tributaries.”

“In recent decades, Europe has retreated to the conduct of soft power. But besieged as it is on almost all frontiers by upheavals and migration, Europe, including Britain, can avoid turning into a victim of circumstance only by assuming a more active role.”

“We fought a military war; our opponents fought a political one. We sought physical attrition; our opponents aimed for our psychological exhaustion. In the process we lost sight of one of the cardinal maxims of guerrilla war: the guerrilla wins if he does not lose. The conventional army loses if it does not win. The North Vietnamese used their armed forces the way a bull-fighter uses his cape — to keep us lunging in areas of marginal political importance.”

“The Kissinger Saga. Henry and Walter: Two Brothers from Fuerth/Germany. Documentary, 90 min. , first time aired: Bayerischer Rundfunk , January 21, 2007. Summary”

“It is a mistake to assume that diplomacy can always settle international disputes if there is "good faith" and "willingness to come to an agreement". For in a revolutionary international order, each power will seem to its opponents to lack precisely these qualities. In the absence of an agreement on what constitutes a reasonable demand, diplomatic conferences are occupied with sterile repetitions of basic positions and accusations of bad faith, or allegations of "unreasonableness" and "subversion". They become elaborate stage plays which attempt to attach as yet uncommitted powers to one of the opposing systems.”

“The illegal we do immediately. The unconstitutional takes a little longer.”