Fareed Zakaria

But now, we are becoming suspicious of the very things we have long celebrated - free markets, trade, immigration, and technological change. And all this is happening when the tide is going our way. Just as the world is opening up, America is closing down.

It is likely that human beings will find fulfillment and will be rewarded for the same qualities that they have been rewarded for for 5,000 years. And that is intelligence, hard work, honesty, a sense of character, loyalty to family and friends, and above all, love and faith. If you are trying to decide what you should do, those are the things you should do. And you know it.

In a very weak economy, when you say 'cut government spending,' what you mean is you're laying off school teachers and you're de-funding various programs that put money into the economy. This means you have more unemployed people that then draw unemployment benefits and don't pay taxes.

The Berlin Wall wasn't the only barrier to fall after the collapse of the Soviet Union and the end of the Cold War. Traditional barriers to the flow of money, trade, people and ideas also fell.

If you listen to the political discourse in America today, you would think that all our problems have been caused by the Mexicans of the Chinese or the Muslims. The reality is that we have caused our own problems. Whatever has happened has been caused by isolating ourselves or blaming others.

In the 1990s, we were certain that Saddam Hussein had a nuclear arsenal. In fact, his factories could barely make soap.

But as the arms-control scholar Thomas Schelling once noted, two things are very expensive in international life: promises when they succeed and threats when they fail.