It is not shame for a man to learn that which he knows not,whatever his age.
To live is not to breathe, but to act.
质量是精心构建的文化环境的结果。它必须是组织的结构,而不是结构的一部分。
The longer I live the more I see that I am never wrong about anything, and that all the pains I have so humbly taken to verify my notions have only wasted my time.
The true power of mathematics lies in its ability to simplify the complex and reveal the underlying patterns of the universe.