Practical reason perhaps is a sense of what will work and what will not.

实际理由可能是,意不意识得到,哪种方式可行的差别。

耶鲁公开课 - 政治哲学导论课程节选

You get people around the world to think about these problems, these issues-- practical idealists who will study what works, who will study the best and through that,make a difference.

让全世界的人们思考这些问题，实际的理想主义者,研究可行的方法，研究最好的个体，他们会带来改变。

哈佛公开课 - 幸福课课程节选