Success is not final, failure is not fatal: It is the courage to continue that counts.

选自汉·桓宽《盐铁论·相刺》。橘柚生长于江南，各地的人吃起来都有甜的感觉，这是因为大家的味觉是相同的；郑国卫国的音乐，大家都觉得好听，那是因为大家对声音效果的感受是相同的。这句话以吃橘柚的感觉与听音乐的感受为喻，说明是非好坏的标准是客观存在的，人类社会的价值认同大体是相同的。

The best way to predict the future is to invent it.

理解自然的基本力量对于理解宇宙至关重要。

The writer’s duty is to tell the truth, even when it is uncomfortable.

In a way, I've got some bad news, particularly to anybody who's come to Oxford from abroad. There's a real problem with snobbery, because sometimes people from outside the U.K. imagine that snobbery is a distinctively U.K. phenomenon, fixated on country houses and titles. The bad news is that's not true. Snobbery is a global phenomenon; we area global organization, this is a global phenomenon. What is a snob? A snob is anybody who takes a small part of you, and uses that to come to a complete vision of who you are. That is snobbery.