量入为出，储蓄投资。学习你需要学习的东西。
Life was simple before World War II. After that, we had systems.
最好的钢材不是在熔炉中制造的，而是通过团队合作和共同目标锻造的。
In mathematics, you don't understand things. You just get used to them.
生活的成功意味着做那件对你来说最珍贵的事。