How can we create a situation that improves us with the role.

如何创造一个利用角色自我改进的情境。

哈佛公开课 - 幸福课课程节选

And America has to recognise that we're one nation playing our role and trying with other nations to create a world that stands for universal values or that lives up to universal values.

我们必须意识到，我们只是一个国家,做好我们的本分,试着和其他国家一道,建造一个拥有共同价值观的世界,或追求共同价值观的世界。

普林斯顿公开课 - 国际座谈会课程节选