某种无形力量的可怕阴影，虽不可见，却在我们中间漂浮。

Each success only buys an admission ticket to a more difficult problem.

可持续发展不仅仅是一种趋势，更是我们对后代的责任。

【释义】贤能的人处世，会根据时代的变化而调整自己的行为。

The brain is a kind of computer, but it's a very different kind of computer from the ones we're used to.