We must balance economic growth with ecological preservation—there's no other option.

You cannot always control what goes on outside, but you can always control what goes on inside.

对黑洞的研究彻底改变了我们对空间和时间的理解。

译文：奉承的话顺从了人的内心容易让人高兴，直率的话不能接受让人容易发怒。赏析：奉承的话虽然好听，但能让人迷失自我，直率的话虽然逆耳，但能让人清醒。我们少听阿谀的谗言，多听直率的忠言。

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.