科学无法解决自然的最终奥秘。这是因为，最终我们自己也是自然的一部分，因此也是我们试图解决的奥秘的一部分。
Science cannot solve the ultimate mystery of nature. And that is because, in the last analysis, we ourselves are part of nature and therefore part of the mystery that we are trying to solve.
I must study politics and war that my sons may have liberty to study mathematics and philosophy.
To say something is to perform an action， and to perform an action is to do something with words.
The only way to do great work is to love what you do.
人生最紧要系活得开心，其他都系次要。