The Great Depression was the defining macroeconomic event of the twentieth century, and it led to a fundamental rethinking of macroeconomic theory and policy.
大萧条是二十世纪的决定性宏观经济事件，它引发了对宏观经济理论和政策的根本性重新思考。
大萧条不是市场的失败，而是政策的失败。
Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passion, they cannot alter the state of facts and evidence.
Investing in clean coal technologies isn't an expense—it's an investment in our future.
Act as if what you do makes a difference. It does.
当你开始考虑如果你输了你会做什么的那一刻，你就已经输了。
人体是最复杂的谜题，而医学是我们解决它的方式。