You take delight not in a city’s seven or seventy wonders, but in the answer it gives to a question of yours.
如果我们致力于正确的技术,可持续的煤炭行业是可能的。
我为孩子们写作,因为我曾经是一个需要书籍的孩子。
在观测天文学中,耐心是关键,有些发现需要几十年才能确认。
It is one thing to show a man that he is in an error, and another to put him in possession of truth.
向一个人展示他在错误中是一回事,让他掌握真理是另一回事。