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.

爱是自由的；承诺永远爱同一个女人，与承诺永远相信同一个信条一样荒谬。

没有道德规范的效率只是在错误的方向上加速。

Natural experiments are a powerful tool for understanding causal relationships in the real world.

I want to show that humanity can be found even in the darkest places.

We must respect nature’s wisdom while advancing scientific progress.

The most sustainable plastic is the one that never needs to be made in the first place.

解释：能吞下船的大鱼，不会在细浅的溪水里遨游；在天空高飞的鸿鹄，不会在肮脏的水池栖息。

The decline of violence may be the most significant and least-appreciated development in the history of our species.