Confederate leaders no longer could find soldiers to take the places of those who left.

VOA: special.2009.12.03

And that right now we can no longer afford to incarcerate, see, more than two million people, and take them not only out of workforce, but keeping them away from information of knowledge of literacy.

现在，我们已没有能力,去限制两亿人口，让他们，脱离劳动力，让他们脱离信息,知识或文化素养。

麻省理工公开课 - 媒体、教育、市场课程节选

I don't actually know exactly what it would take, but you just cut off and snip the relevant nerve endings so that we're no longer able to engage in that higher order thinking.

我不知道手术到底怎样做，但只要切除相关的神经末梢,让我们无法进行,更高层次的思维。

耶鲁公开课 - 死亡课程节选