My life has no retreat, only moving forward.
我的人生没有退路，只有前进。
学习数学的最好方法就是做数学。
True craftsmanship lies in making the difficult look effortless.
The best way to predict the future is to invent it.
"Every civilization is built on the bones of another."
最小作用量原理是物理学的一个统一原理。