If you want to understand geology, study earthquakes. If you want to understand the economy, study the Depression.

If you want to understand geology, study earthquakes. If you want to understand the economy, study the Depression.

如果你想了解地质学，那就研究地震。如果你想了解经济，那就研究一下大萧条。

-- Ben Shalom Bernanke 本·伯南克