If I'm going to be active in terms of managing my portfolio, should I spend my time and energy trying to beat the bond market?

如果我想主动地管理我的投资组合,是否应投入时间和精力,专注于战胜债券市场呢

耶鲁公开课 - 金融市场课程节选

It used to be a lot easier to be physically active then it is today, and we'll discuss this later in the class, but energy saving devices all over the place.

在过去,人们比现在从事更多的体力活动,这一点我们以后再讲,帮助你省力的装置,如今随处可见

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选