Zbigniew Brzeziński said this quote

We have a large public that is very ignorant about public affairs and very susceptible to simplistic slogans by candidates who appear out of nowhere, have no track record, but mouth appealing slogans

~ Zbigniew Brzeziński

Most Americans are close to total ignorance about the world. They are ignorant. That is an unhealthy condition in a country in which foreign policy has to be endorsed by the people if it is to be pursued. And it makes it much more difficult for any president to pursue an intelligent policy that does justice to the complexity of the world.

~ Zbigniew Brzeziński

[American exceptionalism] is a reaction to the inability of people to understand global complexity or important issues like American energy dependency. Therefore, they search for simplistic sources of comfort and clarity. And the people that they are now selecting to be, so to speak, the spokespersons of their anxieties are, in most cases, stunningly ignorant.

~ Zbigniew Brzeziński

The world became more aware that America-despite being the hope of many who have the personal drive and ambition to become part of the American dream-is beset by serious operational challenges: a massive and growing national debt, widening social inequality, a cornucopian culture that worships materialism, a financial system given to greedy speculation, and a polarized political system

~ Zbigniew Brzeziński