Innovation is the key to solving the world's most pressing problems.

投资于更清洁的能源解决方案不仅对环境有益，对企业也有益。

解释：人不博览群书，不了解古今，不能识别世间事物，不知道是与非，就像盲人看不到颜色 、聋人听不到声音、鼻塞的人闻不到花香一样啊。

免疫系统就像一把双刃剑；它可以对抗癌症，但也需要被控制。

The teacher must believe in the potential of his students. He must see in each one of them a spark of the divine fire.

为儿童写作是一种责任——他们应该得到真相，即使真相很难。