“The U.S. might enjoy overwhelming military advantage, but its relative economic power, which in the long run is almost invariably decisive, is in decline. The interregnum after the Cold War, far from being the prelude to a new American age, was bearing the signs of what is now very visible: the emergence of a multipolar world.”
Martin Jacques
“A great civilization is not conquered from without, until it has destroyed itself from within. The essential causes of Rome's decline lay in her people, her morals, her class struggle, her failing trade, her bureaucratic despotism, her stifling taxes, her consuming wars.”
Will Durant