The writer observes that survival is a difficult endeavor and that the world can sometimes seem harshly hostile.

作者发现，人类需要通过努力而生存,但这个世界往往是非常残酷的。

耶鲁公开课 - 旧约导论课程节选

May all living things be happy and at peace, or whoever that's needing our wishes, that way it goes out from us into the world."

万物皆快乐平和，或者是祝福那些需要的人，这样就可以走出自我融入世界“

普林斯顿公开课 - 人性课程节选

It's actually kind of a crusade of mine-- I believe that the world needs more portfolio diversification.

事实上，这是我长期研究的一个方向-,我认为，世界需要更多元化的投资组合。

耶鲁公开课 - 金融市场课程节选

Within very little time, the whole world will be made to feel better.

只需要很短的时间，整个世界都会感觉更加美好。

哈佛公开课 - 幸福课课程节选

Plus it makes it, as I talked about last time, much easier to think about distributing the vaccine around the world because shots require skilled medical personnel, whereas, an oral vaccine could be self-administered.

而且,这会使得,就像我上次谈到的,这会使得疫苗更容易在世界范围内分发,因为注射需要专业医疗人员,但是,口服疫苗自己就可以服用

耶鲁公开课 - 生物医学工程探索课程节选

If you have a brain, and a body, and a metabolism that wants calories, it wants fat, it wants sugar, it wants a broad variety of food so you can survive, that would be good if you lived in certain parts of the world today.

如果你有大脑,有身体,有新陈代谢,这些都需要能量,就需要脂肪,需要糖,需要极其多样食物,你才能活下来,世界上只有部分地区可以保证这些

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

What the world needs, more than anything else,is practical idealists.

世界最需要的，不是其他什么，就是务实的理想主义者。

哈佛公开课 - 幸福课课程节选