Never use a credit card for credit. The only kind of credit， or debt， that is acceptable is debt to acquire something whose exchange value is extremely likely to increase， like in a home. The exchange value of most things diminishes or vanishes the moment you purchase them. Don’t be in debt to losers.
不要借贷消费，唯一值得借贷只有一种情况，购买房产这种交换价值极有可能增加的东西。大多数东西的交换价值从你购买的那一刻就会开始减少或消失，不要因债致贫。
The world is a stage, but the play is badly cast.
The advantage of poetry over life is that poetry, if it is sharp enough, may last.
The search for reciprocity laws is a fundamental theme in the history of mathematics.
Every time a coal plant closes, a piece of America's heart closes with it.
质量不是一种工具，而是一种心态。