Well, one of the lessons of this course is we have a wonderful theory, but we don't manage it well, mostly.

我们在这门课里可以学到的一点是,我们拥有很好的理论，但在实践中却总是不能应用得当。

耶鲁公开课 - 金融市场课程节选

But most of the objections to Plato's particular form of the philosophic kingship on the practicality of his idea.

但对柏拉图,特别形式之,哲学王权的异议,在其实践性。

耶鲁公开课 - 政治哲学导论课程节选

Your P-functioning is actualized now, because you're engaged in thought, but you don't lose the ability to think during those moments when you're not thinking.

你的能力正在被实践，是因为你正在思考，但你没有在思考的时候也没有,失去思考的能力。

耶鲁公开课 - 死亡课程节选

The trouble with the etymology of theory and the way in which the word has been used traditionally is that sometimes it actually means practice, and then at other historical periods it means something very different from practice, something typically from which practice is derived.

理论这个词在词源,和传统的使用方法上的复杂之处在于,它有时候指的是实践，但在特定的历史时期,它指的是和实践非常不同的东西，也就是实践产生的依据。

耶鲁公开课 - 文学理论导论课程节选