I am God's vessel. But my greatest pain in life is that I will never be able to see myself perform live.
——1963年6月25日在西德市政厅柏林墙前的演说
The simple step of a courageous individual is not to take part in the lie. One word of truth outweighs the world. In keeping silent about evil, in burying it so deep within us that no sign of it appears on the surface, we are implanting it, and it will rise up a thousand fold in the future.
学习数学的最好方法就是做数学。