The AdS/CFT correspondence is a powerful tool for understanding quantum gravity.

I quite agree with them that it is not an ennobling experience. Poverty entails fear, and stress, and sometimes depression; it means a thousand petty humiliations and hardships. Climbing out of poverty by your own efforts, that is indeed something on which to pride yourself, but poverty itself is romanticised only by fools.

非暴力是人类拥有的最伟大的力量。

使我们成为人类的东西也是使我们脆弱的东西。

可持续性不是一种选择，而是一种责任。

人心是矛盾情感的战场。

Leadership is about making tough decisions today that will benefit everyone tomorrow.