Federal Reserve chairman Greenspan at the Kansas City Fed Jackson Hole conference: Fed's forecasts and policy is increasing driven by asset price changes. Economic analysis must deal with balance sheet issues now more than in the past. Greenspan on asset prices: "Our forecasts and hence policy are becoming increasingly driven by asset price changes." 临退休了，Greenspan似乎终于没有太多顾忌，开始谈论balance sheet的问题了。

看不懂.能翻译一下吗?谢谢