The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
数学的本质不是把简单的事情复杂化,而是把复杂的事情简单化。
The real journey is the one that changes you.
战争的权利源于万国法,而万国法建立在全人类同意的基础上。
In the end, we only regret the chances we didn't take.