Well, polio is not yet eradicated but there still are hopes that polio could be eradicated.

小儿麻痹症并没有被根除,但是依旧存在被根除的希望

耶鲁公开课 - 生物医学工程探索课程节选

Even if the research doesn't always communicate good news, it's about communicating what works, what is real, as opposed to our dreams , our desires, our hopes, our wishes-- that's not enough.

即使研究并非总是传达好消息，它传达的是行之有效的方法，可为的方式而不是空洞的梦想，渴望，希望，愿望-,那远远不够。

哈佛公开课 - 幸福课课程节选