Challenges are opportunities in disguise; embrace them with courage and creativity.
书籍是镜子:你只能在其中看到你内心已有的东西。
The mind once enlightened cannot again become dark.
我很少解释,不回应,但我知道自己在做什么。
作品越是个人化,就越具有普遍性。
The elegance of a mathematical proof is in its simplicity and clarity.