To be a nurse is to walk with people through some of the most vulnerable times of their lives.

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

实现明天的唯一限制将是我们今天的疑虑。

穷人的时间总被廉价出售，却永远买不到时间。

今天种植的每一棵树都是留给后代的遗产。