And we'll talk about and discuss the importance of idealism and maintaining idealism if we are to introduce personal change, inter-personal change, or community or society change.

我们会谈到和讨论理想主义和保持理想主义的重要性,如果我们要介绍个人的改变，个人之间的改变，或群体与社会的改变的话。

哈佛公开课 - 幸福课课程节选