It is both quiet and tranquil, at times It also powerful and destructive.

自然有时是宁静的安静的,但也是强大而有破坏性的。

普林斯顿公开课 - 人性课程节选

I've read a lot of research in this area about the importance of quiet times whether it's in a class, in a lecture, whether it is at home, whether it is for a leader in the business, for relationship, for children starting from pre-schools.

关于安静时刻的重要性，无论是课堂里，讲座里，还是家中，无论是对公司领导，爱情关系，甚至学龄前儿童。

哈佛公开课 - 幸福课课程节选