The evaluation criteria for rationality of practice should be defined respectively according to the three indispensible parts:rationality of end, rationality of instrument and rationality of value.

实践合理性的评价标准应当从实践合理性三个不可或缺的组成部分（目的合理性、工具合理性、价值合理性）分别加以考察。

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And so we'll end the semester by thinking about questions along the lines of the rationality and morality of suicide.

我们将通过思考,自杀的合理性和道德性,结束这个学期。

耶鲁公开课 - 死亡课程节选